Turn on the laptop if it is not. The laptop does not turn on. RAM failed

So, about 8 years ago, laptops actively burst into the world. They immediately began to be in active demand. Therefore, before discussing why the laptop does not start, let's talk about what advantages this technique has.

Benefits of laptops

To begin with, this is that a laptop computer is a compact device that can replace a stationary PC. This is quite convenient for those who do not have a lot of space in the apartment. A laptop, even with the largest diagonal, will take up a small amount of space on the table.

Another plus is the possibilities. In terms of power, portable computers are not inferior to stationary counterparts, sometimes even surpass them. And in general, you will agree that a laptop is more convenient and practical - if you want to watch a movie while lying on the couch - please! Wanted at the table - no problem! The quality of "notebooks" is no worse than stationary computers. But sometimes a problem may arise - the laptop does not start. Let's see why this can happen and how to deal with it.

There is no reaction

So, let's consider a rather rare, but very sad reason that the laptop does not start. You are trying to turn on your little "iron friend", but he does not react to your actions at all. That is, there are no noises, sounds of switching on, squeaks, squeals, rustling and clattering - only silence.

If you asked yourself the question: "The laptop does not start, what should I do?" - and faced with a complete lack of reaction of this technology to all your futile attempts to turn it on, then make sure that the laptop is in good condition. Of course, it will not be as easy to do this as in the case of a stationary PC, but it is necessary to find out what is the cause of "death". Take the laptop to a service center - they will definitely tell you if your "laptop" is subject to resuscitation.

Is there food?

Another reason why the laptop does not start is the lack of battery power and, as a result, the lack of power supply to the equipment. So before going to a service center, first make sure that your sockets are in perfect working order. Thus, before sounding the alarm, try connecting the laptop to different outlets in the house.

Also, insert the battery into the laptop and let it recharge for a bit. The fact that power is supplied is usually signaled by a special indicator light. If it does not light up, the battery is in a bad condition. But after all, a laptop can work without it, only from the network. So don't panic right away.

Doesn't start with music

It may also happen that the laptop does not start, but there are still reactions to manipulations. This is already a good sign - it's not about technology, you don't need to buy a completely new laptop. Usually a rather pleasing sign is the characteristic "beeping" during the first seconds of switching on.

What do they signal? In general, there is a huge amount of literature that clearly describes all the "beeps" and the reasons for their appearance in the absence of a full start of the computer. So if you turn on your portable equipment, and it “beeps” at you, there are two ways out: read the literature or take it to a service center. You can turn to friends who have already had to deal with a similar nuisance.

Air shaking

If the laptop does not start, the black screen, signaling its "off", still did not light up and boot up, but the noise from your "iron friend" is heard - this means that you simply do not have initialization. That is, the computer seems to turn on, shows signs of life (namely: the "cooler" turns on and makes noise), the "caps" and power indicators light up and ... that's it. Nothing else. The fan is spinning wildly, the "computer" hangs and does not move from a dead center.

What could it be? There are several reasons. The first, perhaps the least pleasant, is the lack of hardware. To be more precise - the processor or RAM. That is, of course, these "spare parts" are, but are in a faulty condition. A more favorable reason for self-correction is a broken BIOS. In this case, you need to reinstall it and try to turn on the computer. By the way, if the laptop does not start, do not try to replace its component parts yourself - you are more likely to be left without portable equipment completely.

Eternal reboot

If you have read everything that was said earlier, but are still looking for a solution to the problem "the laptop does not start, what to do", then study the article further. Now we move on to more "pleasant" reasons.

It may happen that the system will not boot, but the computer seems to be showing signs of life, but at the very last moment it goes to reboot. And so on until you turn it off yourself. This behavior is a BIOS failure signal. There are quite common cases when the BIOS "folded" due to overheating of the processor and the accumulation of dust in the cooler. Sometimes the cause is damage to the computer's power supply system - it tries to turn on, but there is not enough power. So if a laptop - Asus, HP, Samsung or any other - does not start, take it to a specialized center for a complete diagnosis. Still, if computers are not your element, just entrust your business to professionals.

HDD

Now let's get closer to more "mundane" options for why the laptop does not start. Quite often, problems arise directly when loading the operating system. For example, Windows does not start on a laptop at the very beginning of initialization. That is, at the stage of the appearance of the characteristic badge of the company. Why won't my laptop start?

This kind of problem happens mainly due to the fact that the computer simply does not see the hard drive on which the operating system is installed. Thus, if you are sure that the problem is not in the processor or RAM, then check if everything is fine with your "hard" one. This action is done by studying the BIOS. If in the settings of the download queue, for example, you do not see the HDD, then the problem is in the hard drive. In this case, it must be replaced. It is not recommended to put your hand on the fragile and small laptop technology on your own. Replacing a hard drive on a laptop is a delicate and rather complicated procedure.

Restart on boot time

If a laptop - HP, Asus, Acer or any other (regardless of the manufacturer) - does not start up - during the loading of the operating system, or rather, the OS constantly reboots even before you can see your desktop or even the words "greetings "There are a lot of problems here. The most common are virus attacks. But there may be some failures and malfunctions. If you are overtaken by this problem, then the simplest solution is to reinstall the operating system. Just put a clean "Windows" on a formatted hard drive, and all startup problems will be solved. Of course, if you are a fan of "digging" at the root of the failure, you can try starting in safe mode and look for what exactly is the matter in order to bypass the process of "demolishing Windows".

There is sound, no picture

It also happens that the laptop does not start - a black screen appears immediately after you see signs of BIOS loading. With all this, the sound from the computer goes - the characteristic noises and music of loading Windows are audible. In this case, the behavior of the computer indicates that you most likely have problems with the video card. Most likely, it is simply broken or damaged. What should be done in such a case? Of course, to change "spare parts". With a great desire and appropriate skills, you can carry out this exciting procedure yourself. Nevertheless, it's not worth the risk - computer malfunctions, "cured" by inept hands, can lead to the death of equipment completely and irrevocably.

Viruses

So, your laptop does not start. What to do? If you have been successfully working on your “machine” for a long time, with all this, the options with a lack of electricity, batteries and a malfunction of any computer hardware have already been excluded, then most likely the problems are caused by viruses.

Virus attacks, as you know, have taken place at all times of the existence of the PC. Hackers and other ill-wishers are ready to do anything to get information and corrupt it. So, various "trojans" are able to bring the computer to a state of "white heat", in which you lose control over your operating system. In addition, viruses can erase information. Absolutely any. Attacks are subject to personal files of various contents, but first of all, when a computer "diseases" system files suffer. In such a simple way, some important details of your "OS" can easily be wiped off the face of the earth. In fact, after important files are deleted, the first time you restart the system, you will find that the laptop does not start. - this is the name of the picture when only a black screen opens before the user when the computer boots. At best, a cursor will appear that you can move around the monitor.

What to do if your laptop does not start for a reason First you need to try to clean your computer from pests. This can be done with the help of special anti-virus programs. In addition, the Windows Recovery tool can help you in this matter. Asus laptop or any other does not start - all the same. Viruses do not bypass any computer.

If you don’t want to figure out once again how to cure a computer system, you can simply update it. That is, reinstall. Format the hard drive and install a brand new OS. That being said, make sure you have a good anti-virus program this time around. Also, be very careful when downloading certain files from the Internet. Don't visit questionable sites.

Not fully working

Another question that we will consider today is on a laptop. What if you cannot install or run a toy / program? You can often find this question in different forums.

In fact, there are a lot of reasons why games do not start on a computer. Here and viruses, and system problems, and failures. But the most banal among them is the non-compliance of the laptop with even the minimum system requirements. Therefore, try to watch that the game matches the hardware.

If a particular program or other file does not run on a laptop (especially those that include a lot of graphics), then take a close look at the video card. In many "notebooks" it is built-in, which does not allow you to install all the desired games. Even in the system requirements you can find the inscription: "May not work on laptops with the following video cards ..." Attentiveness, attentiveness and once again attentiveness.

Of course, due to viruses, games may also not start. The solution is simple - cure the computer. In exceptional cases, it may be necessary to completely reinstall the system or roll it back to a time when there were no failures. But there is a small problem with "rollback" - special viruses can prevent Windows from completing the restore safely. Do not be afraid and think carefully about how you can remove the virus from the system. Now you know what to do if Windows does not start on a laptop. Good luck!

Notebook manufacturers take into account the fact that the devices they supply are high-tech and the likelihood of failures in their work is quite high. That is why almost all laptops are equipped with simple diagnostic tools for quick troubleshooting and troubleshooting.

Moreover, in most cases, the user can restore the device to work independently. The most difficult thing is to establish the initial cause of the failure. How to determine why the laptop does not turn on and what can be done in this situation?

The laptop does not turn on - we find out the reasons

Many modern laptops are equipped with a basic I / O system (except perhaps Chromebooks - they use a less functional "bootloader"). This is the so-called BIOS, some models use an add-on over it - UEFI (essentially the same BIOS, but with a more convenient and colorful menu). What it is? This is a small firmware that is "sewn" into the motherboard. Its main purpose is to scan all devices connected to the board and diagnose them.

In most cases, the user can restore the device to working capacity by himself.

What happens when the user presses the power key? A start signal is given to the BIOS. That, in turn, scans all connected equipment (determines the brand and type of processor, the amount of installed RAM, the model of the video adapter, the model of the north and south bridges, tests the display, the presence of a network interface, keyboard, mouse, touchpad, etc.) . If the BIOS does not find any errors, it searches for the bootloader on the hard disk and, if it is found, transfers control of the device to it. Next, Windows starts (or another installed OS - Linux, MacOS, Android, BSD, etc.).

From the above, we can conclude:

• if at startup the user sees the manufacturer's logo, and then the OS starts loading, then the BIOS has run diagnostics and found no malfunctions with the installed equipment;
• if the OS does not start loading, but a service message is displayed on the display, this indicates either the absence or damage of the hard disk, or that the diagnostics have not been completed - one of the components is not working properly;
• if there is no reaction to pressing the power button, the BIOS does not receive a start signal, which indicates a malfunction with the power system.

All this allows you to determine the type of problem due to which the laptop does not start. They are conditionally divided into:

1. Software (system). When an error is caused by a software failure, and the hardware is working properly.
2. Hardware. When the error is caused by a malfunction of any equipment connected to the motherboard.

It is from determining the type of error that one should begin diagnosing a breakdown in order to understand why the laptop does not turn on. The simplest rule:

• if there is a reaction to pressing the power button and fan noise is heard, this is more likely a software failure;
• if there is no reaction at all to pressing the button (including the glow of LED indicators), this is most likely a hardware error.

The user can deal with almost all software errors on their own without contacting a service center. With hardware, things are somewhat more complicated, and it is far from always possible to do without the help of a qualified specialist.

Diagnosis and elimination of software errors

The first step is to clarify that the BIOS is also a kind of operating system, although its functionality is rather small. And failures in the operation of this OS also often occur, therefore, its operation should be diagnosed. Other common programming errors include:

• damage to the OS bootloader;
• damage to system files or the OS kernel;
• failure of software hardware drivers (most often graphics adapter drivers “fail”).

BIOS issues

As a rule, in such cases, the laptop starts up and issues a service error message. In some cases, the image does not appear at all. The easiest way to rule out BIOS problems is to reset it to factory settings. To do this, you need to find a CR2032 battery on the motherboard and remove it for a few seconds (then be sure to put it back). This turns off the power to the volatile CMOS memory, where they are stored outside the BIOS settings. In most laptop models, this battery is located immediately under the bottom cover or under the keyboard - information should be clarified in the service documentation (or just watch a video on disassembling a certain laptop model). If resetting the BIOS settings did not fix the startup problem, then you should check the operation of the hard drive and OS.

It is necessary to find a CR2032 battery on the motherboard and remove it for a few seconds

Problems with the graphics accelerator driver

The video adapter driver is responsible for its proper operation in the environment of the installed operating system (Windows, Linux, MacOS, and so on). In case of malfunctions in its operation, the image may simply not be displayed on the display (or it will disappear at the OS boot stage). How to check if the driver is working? There are two options:

• connect an external monitor;
• start the OS in "Safe Mode".

An external monitor must be connected via the VGA, HDMI or DVI output, depending on the specification of the laptop. The connection must be made with the monitor and laptop turned off, otherwise both the display and the graphics adapter may be damaged.

Press the F8 key and select "Safe Mode"

If connecting an external monitor did not bring any result (that is, the image did not appear on it), then you should try starting the OS in "Safe Mode". For this:

• when you turn on the laptop, press the F8 key;
• after the list of boot options appears, select "Safe Mode".

If we are talking about a laptop with Linux installed, then it must be launched with the “nomodeset” parameter (enter this line in the GRUB parameters by pressing the “E” key).

As a rule, when booting in "Safe Mode", the driver built into the OS is used, so the resolution of the monitor, as well as its color palette, will be "by default".

If the OS was successfully loaded in Safe Mode, you will need to manually remove the installed video adapter driver and install a compatible one (by downloading from the manufacturer's website or taking it from the disk that came with the laptop).

If an error about the absence of a bootloader is displayed when trying to start, this indicates a corruption of the entry in the MBR or GPT directory of the hard disk, where information about the installed OS and a brief algorithm for launching system files are stored. Most often this happens due to the banal wear of the hard drive or damage to system files when the laptop is turned off incorrectly (when the battery was removed during operation or the power adapter was disconnected).

How to fix the problem? The first step is to try to restore the bootloader with the built-in OS tools. But this will require a Windows installation disc or flash drive. So, to restore the bootloader you will need:

• at the stage of starting the laptop, press the F11 key (in some models - F12, F2, Tab);
• from the list of devices that appears, select the disk or flash drive with the Windows installer;
• wait for the installation menu to appear and select "System Restore".

After that, the installer will try to independently detect a malfunction with the OS installed on the hard drive and fix it. With banal damage to the MBR or GPT, this helps. If, after automatic diagnostics, a notification appears that the program was unable to restore Windows boot, then this indicates damage not only to the bootloader, but also to system files, the kernel and the Windows partition. In such cases, only reinstalling the operating system will help.

To solve the problem, you will need an installation disc or flash drive with Windows

It is also worth paying attention, the error about the absence of an OS (Operation System not found) may indicate that not a hard disk is selected as the main boot device, but, for example, a floppy drive or a USB flash drive inserted into the USB port. To fix this error you will need:

• at the stage of starting the laptop, press the F11 key (to access the boot menu);
• select a hard disk as a boot device (as a rule, this line should contain the designation HDD, SATA or ST).

If the laptop has 2 hard drives installed (many "gaming" laptops have both an SSD drive and a traditional HDD installed at the same time), then you should boot from each of them one by one.

Reinstalling the system

This is the most cardinal, but at the same time the most reliable option for eliminating software errors in the operating system. It should be used if the bootloader cannot be restored. You will need either an installation disc or a Windows flash drive for this. You can download a trial version of Windows (with a trial period of 30 days) on the official Microsoft website https://support.microsoft.com/windows. There will be offered ISO-images of installation disks. You should download the appropriate one, and then:

• or burn the image to DVD. Any program for burning discs such as Ashampoo Burning Studio, Nero, Ultra ISO and the like is suitable;
• or write the image to a flash drive. You will need a flash drive with a size of 8 gigabytes or more. The easiest way is to use the Rufus utility. Although it is not recommended by Microsoft, it itself can determine the type of OS being written, and it also allows you to select the type of disk layout - MBR or GPT. You can download it on the official website https://rufus.akeo.ie. The Russian version of the utility is also available.

Reinstalling the OS will help solve many software problems.

• after pressing the power button, press the F11 key;
• select the required drive from the list that appears;
• following the instructions of the installer - install the operating system (select "Install", not "Update").

If the user has a license code for the edition of Windows being installed, it can be entered at the installation stage.

Laptop hardware failure

With hardware failures, everything is somewhat more complicated. Most of them cannot be eliminated at home, and one cannot do without the advice of a qualified specialist. Therefore, it is worth considering only the most banal breakdowns, due to which the laptop may not start, and at the same time, the user can fix them on their own.

No power

In this case, when you press the power button, there will be no reaction at all from the device. The indicators will not light up and the fans will not start either. There are several reasons for this:

• not installed, missing or damaged battery;
• not connected, the power supply is faulty;
• the contacts of the start button are physically damaged.

To fix these problems, you should:

1. Check if the battery is securely inserted (it should be trite to turn it off, wipe the contacts with alcohol, install it back after drying). If possible, check the voltage at the battery terminals. Otherwise, you need to replace it, for this you should contact the official service center.
2. Check power supply. Most of them have an LED indicator of operation. You should check whether the plug is inserted into the socket, the connector into the power supply itself, the connector into the laptop's power connector. If there is a suspicion of a malfunction of the unit (it does not heat up, it has a burnt smell), then it should be replaced.

To check the contacts of the physical button, you will need to disassemble the case and “ring” it with a multimeter for breaks.

Video card failure

A fairly common problem on those laptops that are actively used for games. The main symptom is the absence of an image on the display, the appearance of graphic artifacts, the video card gives an error in the device manager (usually error code 43). Troubleshooting is possible by the following methods:

• replacement of the graphics adapter (if it is connected via the MXM port on the motherboard);
• resoldering a working GPU chip.

In any case, you will have to contact the service center. Unfortunately, the cost of such a repair is about 50 - 75% of the cost of a new laptop, so in most cases it is not practical. Another thing is when it comes to a device under warranty.

Hard disk failure

In this case, the hard disk is either not displayed in boot devices, or an error is generated on it when trying to install the OS (due to the presence of bad sectors). The first step is to pull out the hard drive and wipe its contacts with alcohol - quite often the device is not recognized precisely because of the presence of oxides on them. If no reaction follows this, then you should replace the hard drive with a compatible one (in most cases, this is a 2.5-inch SATA).

Why does my laptop keep shutting down and restarting?

The most common reasons for this:

• RAM malfunction;
• overheating of the motherboard (processor, graphics accelerator, north and / or south bridges, multicontroller);
• malfunction of the power supply or battery (the current it produces sags in voltage or its current strength is insufficient for normal operation of the laptop).

RAM diagnostics is carried out using the Memtest program. If no errors are found, and a battery or power supply failure is ruled out, then the cause is most likely overheating. To eliminate it, you need:

• clean the cooling system from dust;
• replace the thermal paste on the processor, graphics chip, north and south bridges, multicontroller (depending on the laptop configuration);
• replace all thermal pads installed in the laptop (they are usually installed on memory chips integrated into the motherboard or graphics adapter);
• lubricate the cooler with silicone oil.

And to check the current temperature conditions of the laptop components, you can use the AIDA64 program (https://www.aida64.com/downloads - here is a demo version limited in time). As a rule, the normal operating temperature for all laptops under load is in the range of 45 - 80 degrees. If it is higher, then to protect against failure, the device simply shuts down in emergency mode. That is why the laptop either turns off or restarts.

Video: how to identify problems if the laptop does not turn on

In total, there are many reasons why a laptop may not start. The most common are discussed above. If it was not possible to fix the problem on your own or the user simply does not want to do this, you should contact the official service centers. You can get acquainted with their list either in the warranty card for the laptop, or on the manufacturer's website.

One fine morning (afternoon, evening) you sat down at your laptop, pressed the power button and the laptop does not turn on? Don't worry, let's take a look at this issue. Any malfunction of the computer, whether it be hardware problems or software failures, can be identified using the “from simple to complex” method. This is what we will do in the article.

You are required to follow all the steps and methods that are described here. While reading the article, follow the steps that you can do yourself without disassembling the laptop, and only then do the more difficult options that are described in this article. The reasons for a breakdown of this nature can be different: the power supply is broken, a problem with cables, unstable operation of the video card, hardware problems, the motherboard burned out, and more. Imagine the most neglected version - the laptop does not react in any way to an attempt to turn it on, does not blink the lights on it and does not make sounds. There can be many reasons for this behavior, let's start by looking at those that lie on the surface, after which we will go deeper with each step in search of a problem.

Note: if the indicators on the laptop light up or noise is heard, then we will talk about this breakdown below.

Important! If you still have a laptop warranty, then it's time to take advantage of it! Read the article to the end and if you can’t turn on the laptop, then you shouldn’t disassemble it, because the service center will tell you for free what the problem is and will already decide whether they do it for free or you will have to pay extra.

Electricity test

So, if your device does not turn on and you wondered why the laptop does not turn on? Then the first step is to check if it is receiving enough power to turn on. Just as a car will not start on a dead battery, a laptop will not work if it does not receive sufficient voltage. And the first thing to start with is to check if there is voltage in the outlet to which the laptop is connected. You can do this with a tester, if you have basic knowledge of working with electricity, or simply by plugging any other device into a socket, even a table lamp or any other object by which you can understand that there is electricity.

Attention! If you use a tee, or how nice it is to call a surge protector, then the problem may be precisely in it. Sometimes, when hitting the tee, work can be disrupted and therefore your laptop will not turn on. It is best if you plug the laptop into a power outlet without any adapters to check the performance of the laptop.

Broken or broken cable

We made sure that the socket is working, we move on to the “sickest” one. In the power of a mobile computer, there are devices that are very easy to diagnose: a power supply and a battery. To begin with, we inspect the block visually. It often happens that our pets simply decided to “play” with the wire in the absence of the owner and damaged it. Or maybe the pets have nothing to do with it, and the wire has become unusable from regular careless handling. You need to inspect the power cable from end to end, because it can break in different places. You may have a different power supply, we are looking at the most popular ones at the moment.

Here is the power supply (areas marked in red where you need to pay attention):

If obvious damage to the wire is found during the inspection (if you have a laptop warranty, then in any case this repair will be paid for you), you can do it in two different ways:

1. Cable performance can be restored with a little effort. To do this, you will need to strip the wire at the site of damage and re-solder it to eliminate the possibility of a break. After that, it is necessary to isolate the place of soldering (one wire from another, and then the general “design”). The easiest way to do this is with electrical tape. This method is practically free, but it will require some set of tools, which includes: a clerical knife, electrical tape, solder, a soldering iron, as well as skills in working with the latter.
2. Replace the block wire with a new one or entrust the repair to a professional. It will definitely be more expensive than doing it yourself, but definitely more reliable if you are not an expert in these matters.

It is possible that you will not see breaks on the cable, but you must also take into account the fact of an internal breakdown in the cable. And this means that if you do not see the breakdown visually, then there is a possibility that it is hidden from your eyes. In case you decide to solder the wire yourself, I can suggest watching a video that talks about repairing a laptop's power supply:

By the way, various power supplies for laptops are sold in the bazaars, which are cheaper than in computer stores, and users take these devices because of the savings. But I want to warn you a little. If the power supply is of handicraft origin (and usually these are sold in bazaars), then in the future this power supply must be handled very carefully, because their cables can be thin or they are made of poor materials. Therefore, if you buy such a power supply, then until the next replacement, as you understand, is within reach. In the event that you buy a power supply, then you should know that it is better to overpay a little for the device and buy it in a computer store.

Additional test power supply and laptop

Suppose a visual inspection was unsuccessful and the wire is intact. Now we disconnect the power supply from the network and from the laptop and try to turn on the laptop. In this case, the power will come from the battery, which at this moment should be in the laptop. If everything works, then the problem is in the power supply itself. He could fail and not give the voltage necessary for the operation of the laptop. The solution to the problem is simple - you need to replace the power supply. Also, there is no need to clarify one nuance - perhaps the battery has already sat down and the laptop will not turn on because of this. To do another power supply test, you need to charge your battery, for example, from another working laptop and then connect the charged battery to your laptop, but the power supply must be disconnected from the laptop. Oh, and when you charge your battery in another laptop, after charging, unplug the power supply in the other laptop and leave your battery at the same time. If the laptop works, then the battery is in working order and the issue of its breakdown is closed to you.

Important: if you use a universal power supply for work (you may have already changed the power supply) with a voltage switch, make sure that the regulator is set to the correct voltage (usually a laptop needs 19V, and for example, in your case it can work 15V, it is better to familiarize yourself with documentation that comes with your laptop or call the service center to clarify this data). This is a very important point and skipping this check with your problem would be stupid. If you have a universal power supply that does not fit your laptop, then you need to replace it with an original one, or find a universal one that will fit your laptop.

Note: very often sockets in laptops break - where the power supply is connected. Therefore, look at your nest for damage, you can move it a little to make sure that it is securely fastened. If you think that the socket is broken, then you will have to solder or change the socket. In some laptops, this procedure is problematic, but in the service center I can do this operation for little money.

In addition, power supplies are often equipped with an indicator (diode) that lights up during operation. If this LED does not light up on the power supply, then most likely the power supply is faulty. During your diagnostics, also pay attention to the indicator in the laptop itself (perhaps this indicator is not in your laptop). The fact that the laptop "sees" your power supply can be signaled by this indicator (at the power connector or on the front side) or the backlight of the power button.

Let's say the power supply is working. In this case, you need to check the battery: turn off the power supply and pull out the battery (you need to turn the laptop over and you will see the latches, thanks to which the battery is held in the case).

After the battery is removed, reconnect the power supply to the laptop and press the power button. If our laptop came to life, we rejoice at the solution found and buy a new battery to replace the failed one.

What does the battery look like:

If the mobile PC is still lifelessly on the table, not reacting in any way to pressing the power button after the manipulations, you should pay attention to the button itself. It happens that during operation the button fails - contact is lost or the latches break. In this case, one cannot do without interference in the inner world of the laptop.

Important: if you are not confident in your abilities in disassembling a laptop, it is better to entrust it to professionals - repairing the power button will obviously cost less than a new laptop in case of failure.

However, for inquisitive minds, I will describe the process of troubleshooting a possible malfunction:

1. We remove the top cover of the laptop and get to the button cable, after which we carefully disconnect it.
2. We check the contacts of the loop and the button for cleanliness and integrity. They may be the culprit for your breakdown. If the culprit is the cable, then we replace it with a new one.
3. You can try to repair the loop. Cut off a piece of the plume, to a place where it is in good condition.
4. To clean the cable insulation, it is better to use a blade or a very sharp knife.
5. On the other side of the cable (where there are no contacts), glue the adhesive tape. Thus, the thickness of the cable will increase and it will be securely clamped in the slot (where the cable is connected).
6. Now you must insert the cable from the desired slot (from where it was extracted) and check the functionality.

We hope for the best again, but if the button repair didn’t help, don’t despair, there are still a lot of options for the laptop to start working.

Connected devices won't let me turn on my laptop

Again we return to methods that do not require disassembly of the laptop. Inspect all ports on the mobile PC for connected devices. It may happen that one of the connected devices does not allow our laptop to start. To check this option, disconnect all connected devices and try turning on the laptop. You need to disconnect absolutely everything - flash drives, a mouse and other USB devices that are currently connected to the laptop. In your case, only the power supply should be connected and that's it!

If he "sang", we rejoice, but we continue to calculate the "pest", connecting the devices back one by one. As soon as the laptop refuses to work, you can write the last connected device to the “enemies of the people” and limit the “communication” of your laptop with it.

The laptop makes sounds, the cooler works and at the same time the laptop has a black screen

If, when you start the laptop, you hear the characteristic sounds of its work, but do not observe the usual picture on the screen, the problem may be hiding in the display or video card. To exclude the first option, you need to connect a regular monitor from the computer to the VGA or HDMI port of a laptop with a known working monitor.

We are trying to turn on the laptop with a monitor connected to it. If the usual pictures ran on the monitor - congratulations, the problem is found, it lies in the laptop display (or in the cable it is connected to). If, when you turn on the laptop, a third-party monitor also shows a black screen, like the laptop’s native screen, it’s probably a video card issue.

A laptop video card, like any other node, can fail for many reasons. She needs repair or replacement - competent specialists will decide, it is unlikely that it will be possible to fix the problem on her own. It is recommended to send the laptop to the service and wait for the conclusion of a professional. However, before visiting the service, you can use one trick, which I will discuss later.

Discrete graphics card not working

Most laptops now have such powerful hardware that they can handle heavy applications, often with complex graphics, without straining. Therefore, mobile computers are equipped with discrete (separate) video cards. At the same time, there is also an integrated video card on board, which acts in less “rich” assemblies as the main “workforce”. So, if, in your opinion, a discrete graphics card died, it's not difficult to check it. You need to get to the insides of your mobile PC and turn off the video card, then see how the laptop will behave.

The specific location and procedure for disabling a discrete graphics card depends on the laptop model, and in order to do everything correctly, you will have to turn to a search for a query like “how to disable the laptop graphics card ', where instead of you need to substitute the brand and model of your mobile PC. For such a request, there is no problem not only step-by-step instructions, but also a video, and you can easily cope with the task.

RAM failed

A mobile PC consists of many electronic components, each of which can suddenly fail, and the laptop simply will not turn on. Here's what you should check during the diagnostic process, if you have already decided not to send the PC for service yet and climbed inside your faithful "friend".

First of all, you need to make sure that the memory modules work correctly. Depending on the laptop model, the RAM sticks are placed differently. Usually at the bottom of the laptop there are inscriptions by which you can understand in which area this or that laptop component is located.

As you can see, the arrow shows that you need to open the bolt:

After the bolt is unscrewed, you need to pull this part of the part towards you (in the picture above we see another arrow that shows in which direction the opening takes place):

In the picture, I showed the latches that hold the RAM, you need to pull out the dies using these latches:

They are diagnosed as follows: find RAM among the insides of a laptop. If there are several dice, this simplifies the check, you just need to disable the RAM modules one at a time and each time try to turn on the laptop. Naturally, if the laptop “starts up” after turning off one of the dies, it is probably the one that is faulty and needs to be replaced.

If there is only one memory module, then a spare module will be required to check its performance (you can search among friends). We put another, obviously working, memory stick instead of yours and try to turn on the laptop. Worked great, problem found. No, keep looking.

By the way, do not forget to visually inspect the contacts when disconnecting certain devices in the depths of the laptop. All of them must be clean and undamaged, as well as tightly seated in their places. The presence of oxides on the contacts is not allowed, this can cause the laptop to fail. If during the inspection you find an oxidized contact, clean it to a normal state and only then return the module to its place. When you pull out the RAM, I recommend cleaning the contacts on the RAM using a regular pencil eraser, but not for pens! Perhaps the contact was weak, and the laptop was crashing. You can also blow out the RAM slots with a hair dryer or vacuum cleaner to remove fine dust.

The processor and its weaknesses

I will mention one more detail, the “heart” of our laptop is the processor. The laptop may refuse to turn on if there are any problems with the processor. And the first procedure with it, which any computer master will tell you about, is the replacement of thermal paste.

The processor is perhaps the main organ of any computer, its “brain”. Different laptops use a great variety of processors, but one feature remains unchanged: any processor needs high-quality cooling. That is why it is usually installed in close proximity to the heatsink so that it can remove the heat produced by the processor and dissipate it, thus cooling the "brain" of the laptop. And in order to achieve maximum heat transfer from the processor to the heatsink, a layer of thermal paste is applied between them - substances with a low heat capacity and a high heat transfer rate. Over time, the quality characteristics of thermal paste fall, and it must be replaced with fresh one. Thermal paste can be purchased at any computer store or service center. And most importantly - the price, it costs from 5-10 rubles, which is enough for 1 time.

IMPORTANT: The processor is a very fragile part that requires careful handling, so the replacement of thermal paste must be done carefully. Be careful and remember that our goal is to figure out why the laptop refused to work, and not plunge it into an even deeper "coma" with our actions.

You also need to read that thermal paste is applied to different places on the motherboard. When you disassemble the laptop, you will see 1-3 objects that require thermal paste.

The laptop turns on, but the operating system does not load

Such a story: we press the laptop power button, it makes characteristic sounds, some lines run on the display, but in the end the download stops, trying to tell us something in English (or it reboots endlessly). There can be a lot of options here why the download does not continue as usual. Consider the most common of them:

• The laptop was not shut down correctly. Because of this, a failure occurred, and loading instead of the usual operating system gives an error. The first thing to try is to restart the laptop. Most likely, it will not respond to any keyboard buttons, so just hold down the power button for a few seconds until the laptop turns off, then turn it on again. If the problem repeats, we carry out somewhat more complex manipulations: turn off the laptop and pull out the battery for ten minutes. While waiting, press the power button 3 times.

Turning off the power will allow the laptop to get rid of "negative memories", and after that it can turn on as if nothing had happened. This method really saves, and I recommend everyone to perform this option.

• An error has crept intoBIOS(system software, like an operating system at the very heart of a computer). It may be, for example, that the boot from an incorrect source is installed, the boot parameters are changed. If you are not strong in the BIOS menu, try simply resetting it to factory settings. For ordinary users, the question “raises”, how to enter this BIOS? In fact, the procedure for entering the BIOS is simple and does not require fantastic capabilities from you. By the way, on the site I already talked about how to enter the BIOS and how to set boot priorities in order to install Windows. Link to become. You do not need to read the entire article (unless of course you want to try reinstalling Windows yourself, I recommend reading it), just read the section where I talk about logging in. In short, when you press the laptop power button, you need to press one of the keys (each manufacturer has its own key): Delete, Esc, F1, F11 or F12.

The menu in different versions of the BIOS is different, so find the item with the word "defaults", select it, and then confirm your choice by pressing the "Enter" button. A message will appear where you will be asked - "Download or not?". Of course, you agree, press the "Y" key ("Yes" - "Yes"). The computer will restart and try to start again.

Here is an option for how your BIOS might look like (you need to go to the “Exit” menu):

Or like this:

• Some operating system files are corrupted. There are a lot of options for solving this. For example, you can use standard recovery tools. If a failure is detected in the OS, the system itself will offer you to restore the last known good configuration (perhaps the installation of software from an unreliable manufacturer contributed to the crash of the system). You can also try to start from the so-called LiveCD / LiveFlash. This is a disk / flash drive, respectively, formed in a special way and equipped with everything necessary to boot a PC: system recovery and error correction. Such a LiveCD is in the arsenal of every system administrator and computer service specialist. You can also try another way: press the laptop power button and immediately press F8, you will see a menu where you select the “Last Known Good Configuration” item - there are different versions of Windows, but some log in differently. I gave an example for Windows. Finally, you can reinstall the OS if you are sure that the matter is in damaged files, and you cannot restore the previous working OS.
• Faulty OS boot disk. Hard drives sometimes fail, and perhaps that moment has come right now. When the laptop boots up, the BIOS sends a request to boot the operating system to the hard drive, but it is silent. As a result, the OS does not boot, and we see an error message or an endless reboot. Unlike the previous paragraph, in this case, reinstalling the OS may not help, it simply cannot be done. In this situation, only replacing the hard drive will save you, since in most cases they cannot be repaired. To make sure that the problem is in the HDD, you can also start from a bootable USB flash drive or disk and check the performance of the hard drive. Most likely, it will simply not be detected by the verification tools, or you will see a message about incorrect work. The solution is to replace the hard drive. The site has a very detailed article on how to check any hard drive: "".

In addition to the reasons listed above, there are others. The laptop, when turned on, can stop loading or constantly go into reboot (reboot - “reboot”) due to a malfunction of the microcircuits or an intermittent contact of one of them. This is unpleasant, but not surprising - a mobile computer often lives in extreme conditions, and is not only subjected to vibrations and other physical influences, but simply accumulates so much dust in itself that at one fine moment it may simply prevent it from starting, damaging something inside . That is why regular cleaning of the inside of the laptop from accumulated dust is so important. Dust accumulates inside, delays air circulation, disrupts cooling, which endangers all electronic components of the PC.

Cleaning a laptop is easy. To do this, you need to open the lid, and, armed with a vacuum cleaner or a large brush, or better, both, methodically clean dust and dirt from the insides of the laptop. The main thing is to approach this issue with extreme caution so that during the cleaning process you do not damage the components of the laptop. And remember: laptop cleaning should be included in the list of regular preventive maintenance and carried out at least once a year if you want your laptop to serve you for a long time.

If even after cleaning the situation with the download has not changed, feel free to send the laptop to the service in order to identify the malfunction. In the event that the article was useful to you or you found your problem, you can leave a comment that will allow other users to pay attention to this when testing their laptop.

Like any other piece of equipment, laptops tend to break down. This happens for various reasons. They fall, hot coffee or tea spills on their keyboards, they can't stand it when they sit down or press their backs. But often you have to deal with situations when the owner did not take any physical action in relation to the laptop, but it still does not turn on. A logical question arises - for what then reasons does the laptop not turn on, and what should be done to successfully restore it?

In this article, we will look at the most common causes of laptop breakdowns, as well as give practical tips for resuming their work.

Potential Causes

Even before the software is loaded to the end, showing the desktop on the screen, the laptop performs a large number of operations. Regardless of which operating system you are using, tasks such as:
physical activation (response when pressing a button on the keyboard);
initialization (all system files necessary for the basic launch are loaded);
the appearance of an image (additional hardware is connected and loaded - the video card is on, and so on);
the main loading of the operating system (additional system files are loaded, including drivers, as well as programs selected by the user to automatically start at startup).

Breakdown, as a rule, can occur at any of the considered stages. It is quite difficult to find the cause on your own. How can you notice that the laptop does not turn on? The simplest symptom is that the image does not appear and you see a black screen. That is, the traditional picture symbolizing the loading of the operating system is not visible, and nothing is on fire at all. You may also notice that the equipment does not emit standard sounds such as noise, a system boot notification. In the most serious cases, no indicator works.

There can be several reasons why the laptop does not work at once:

1. The power supply has failed. As a rule, this is one of the most popular reasons. Checking why the laptop does not turn on is quite simple - you just need to connect another power supply, the plug of which is suitable for your equipment model.

If you see that the indicators on the body of the equipment light up and the download has started successfully, most likely you will need a new power supply;

2. No battery power. Please note that this breakdown cannot appear instantly, because when the battery is low, the operating system will ask you to connect to the network to recharge. Even when the battery is out of order and does not want to be charged, a battery icon with an exclamation mark will appear on the battery icon located on the right side of the taskbar (near the clock). Hovering over it, you will see that the system directly claims to connect a failed battery.

Connect your laptop to the power supply, and then press the power button on the laptop. In this case, the laptop should start up, and after the desktop appears, you will see that a portable power source is not connected to the equipment. Without turning off your laptop, try installing the battery in it (until a characteristic click appears). Wait a few seconds. The system will notify you if there are problems with the battery;

3. Motherboard burnt out. The motherboard is the main electrical circuit of the computer, which is responsible for both turning on and performing almost all operations. By default, the RAM chip, system memory, is installed here. With the help of special cables, an optical drive (CD and DVD reader), a video card, a hard drive, and many other components are connected.

Please note that you will not be able to repair the motherboard yourself. This requires special tools, as well as diagnostic equipment. The most common symptom of a breakdown is a strange squeak when you turn on the laptop, or to no avail by pressing the start button of the device. You will have to go to a service center where specialists will completely disassemble your laptop;

4. Missing initialization. Such a malfunction may appear in the following. When starting up a laptop, it boots up to a certain period of time when the hard drive light on the panel lights up. As a rule, there are several reasons for failure - server bridge failure, processor failure, missing BIOS firmware, unsuccessful update, and so on.

Features of mechanical damage

As stated earlier, if you see that when you turn on the laptop it does not respond, mechanical damage can also be a likely cause. A laptop is a technique that is not designed to withstand serious loads. The situation is especially difficult with ultra-thin laptops like the MacBook. Videos have been circulating on the Internet for a long time, in which you can see how the owners bend the case of this device with their hands, without using any additional tools.
Practice shows that when exposed to significant physical exertion, the motherboard, screen, hard drive, and other components can suffer.

Please note that if the physical part fails, you will have to pay for new components. Of course, in the case of the motherboard, you can try to restore it by diagnosing and soldering some nodes. But successful recovery in such cases is more the exception than the rule. You will be very lucky if the masters can restore the old motherboard manually, without replacing it with a new one. For a new fee, as a rule, you will have to pay an amount equal to a third, or even half, of the cost of a complete laptop (depending on the model, as well as the general characteristics of your equipment).

Display issues

The display of modern laptops is a matrix connected to the motherboard using a special cable with its own microcircuit. It works with LED or AMOLED technology. Screen problems are rare, because it is one of the most stable components in terms of durability. But it also happens that the matrix has been broken, or it gives out the so-called “broken pixels” and an error lights up.

The screen consists of a huge number of dots that form a picture, painted in a certain color. "Broken pixels" means that one or more dots are not working - they are black. It also happens that the laptop display does not turn on at all, that is, a black background continues to be displayed on the screen, and when you start your device at night, the screen does not light up at all.

So what to do if the laptop does not turn on due to the matrix? First of all, you need to make sure that the reason is really in the matrix. It is enough to turn on the equipment and observe its reaction. In this case, as a rule, cooler noise should appear. Next, the speakers will play the sound that appears when you start your laptop. All indicators, lights, keyboard (if LEDs are built into it) will work fully. This is a sure sign that the problem lies in the matrix.

If you have a black screen on your laptop, then another way to check why the laptop is not working is to connect an external monitor. This can be a projector or a TV that supports HDMI connection. If there are no other problems with your equipment, you will notice that a full image appears on the screen of the additional monitor.

You will ask a question - what to do if the laptop cannot turn on due to the matrix and nothing lights up on it. The only thing we recommend doing is taking it to a service center. You can also reinstall the matrix yourself, but you need to choose exactly the model that is designed to work with your device. It is strictly forbidden to install other matrices - this will not only lead to unstable screen operation in the future, but also can cause problems during assembly. You can check the name of the matrix installed on your gadget on the Internet.

Operating system

According to statistics, in 30% of all situations when the laptop does not start on its own, the cause is an error in the operating system. This means that one or more of its components have stopped working correctly, in which case you will not be able to run the software.

The symptoms can be very different. The laptop can turn on up to a certain point, and then abruptly turn off on its own. Or it loads but then shuts down. In some cases, it will not start at all, but system sounds from the BIOS will be heard. Having no knowledge in installing new software, we recommend that you again seek help from specialists from the service center. As a rule, it takes several hours to fully reinstall Windows with further configuration. Fulfillment of the order in the service center can take you from one to three days.

A laptop is a complex piece of equipment that can break down at any time. For a successful recovery, you need to first make sure that the reason why it cannot start is correct. If the situation turned out to be relatively simple, you can try to repair it yourself. In the event of a mechanical failure, you will have to seek help from repairmen. Please note that if you independently carry out all the manipulations related to the repair, all responsibility for the possible consequences rests solely with you. It is strongly discouraged to carry out repairs while there is a valid warranty - this will lead to its complete annulment.

The laptop does not turn on and does not boot for various reasons - hardware or software. Often it does not start due to OS problems, incorrect BIOS operation, or after running malicious applications. Next, we will tell you why the laptop does not turn on, and we will also describe how to eliminate most of the problems due to which the device does not boot.

Determine the source of the problem

I can immediately make a reservation that by the nature of the malfunction, it is almost always possible to determine exactly which component of the laptop needs to be repaired. An analysis of the behavior of the device immediately after switching on can tell more:

1. If the laptop is completely turned off, and when you press the power button it does not want to turn on and does not show any signs of life at all, the indicators do not light up, then this is definitely a hardware problem. In this case, you will have to change individual device modules.
2. When it starts, the light is on, after which it crashes when loading Windows, then this problem can be a software problem, which can sometimes be solved very easily.

Understanding the problems, as a result of which the laptop still does not turn on, is already half the way to solving them.

Laptop not responding when power button is pressed

The reason why there are no signs of laptop life at all is mainly power problems. I can advise you to immediately exclude obvious things, for example, check if the device is receiving voltage. To do this, simply connect the power supply to the network - most adapters have a light bulb.

If it is lit, then the device is working. The laptop also has indicators that are lit to show that the device is connected to the network.

When the light is off and does not show signs of life, this indicates a non-working power supply. Sometimes the indicators do not light up due to loose connectors. You can extend the life of the PSU quite easily - you need to turn it on by first inserting a plug from it into the laptop, and then connect the device to the network. So the spark does not light up when connected, which is why the contacts fail more slowly.

In the case when all indicators are on when turned on, the problem may be in other devices. I can advise you to do the following:

1. Remove the battery from the laptop and connect the device from the network through the PSU without it. If the laptop starts up, the light is on, then the way out is to buy a new battery.
2. If the laptop shows no signs of life, replace the battery.
3. Turn off external devices.

If, after turning them off, the indication lights up normally, the laptop is working, connect external devices one by one - this way it will be possible to determine what caused the failure.

Laptop won't boot, but fans are noisy

Sometimes the laptop does not turn on due to a non-working screen, although the device itself boots. Maybe the backlight just isn't on. Hotkeys can be used to turn it on. Their usual combination is the Fn button, pressed simultaneously with F2, F4, F5, etc., depending on the model and manufacturer of the laptop.

Sometimes the monitor itself does not give hope, and instead of the image, all kinds of artifacts can be displayed on the screen.

To check if only it is really faulty, the laptop should be connected to an external monitor.

How to connect an external monitor

To do this, you will additionally need a cable, it must match the interfaces on the external monitor and laptop. Usually on new devices there is no longer an outdated VGA interface at all, but there is a modern HDMI.

• connect the laptop and monitor with a cable;
• connect devices to the mains;
• the monitor should turn on first, then the laptop.

If the image does not load normally on the monitor, set the transfer mode on the laptop by simultaneously pressing Fn and one of the F1 ... F12 function keys, depending on the manufacturer. It usually schematically depicts a monitor and a laptop. This button is responsible for displaying the image - to a laptop, to a monitor, or to both devices.

Problems with the video card

If no signs of laptop life could be found on an external device, but all indicators are on, a discrete video card is a common cause of failure. Due to the frequent launch of "heavy" applications, games, poor performance of the cooling system and heavy dustiness, video card devices overheat and quickly fail.

Therefore, in order to extend their life, do not work on a laptop while sitting on a sofa or bed (this is how you close the ventilation grilles), and for “heavy” games, purchase a special laptop stand with built-in additional fans.

You can fix the problem either by replacing the burned-out module, or simply by turning it off. If it turns off, then the integrated graphics will work normally, but serious games on the laptop will no longer work. Switching can be done in the BIOS by setting the Disable option for the burned card. In addition to the described malfunctions, the device often does not boot due to the inoperability of the processor or motherboard.

Incorrect BIOS settings

Another case is that the splash screen picture lights up, information about the laptop may be displayed on the display, but then it shows an error message, the speaker starts beeping or nothing happens at all, the system does not boot. The main reason for such problems is incorrect BIOS settings. You just need to reset them to default. For this:

1. Enter the BIOS by pressing the Del button (for the Award version), F2 or F10 (for AMI) several times in a row immediately after turning on the power, sometimes the F1, F3, F10 or F12 keys are used to enter the BIOS.
2. Find the line Load BIOS Defaults or something similar (the name may differ in different BIOS versions).
3. Exit the BIOS, saving the changed settings.

If the system does not start again, you should pay attention to other laptop modules - their malfunction can cause the same problem.

Other malfunctions that prevent the laptop from booting

When there are problems with the fact that the hard drive has stopped working, they can also be diagnosed by some signs. To do this, just listen to the life of the HDD - the engine can spin the disk for too long in unsuccessful attempts to read information, the heads can also crackle cyclically for a long time. After that, he generally "hangs".

When the message “Error loading operating system” or something similar is displayed during boot, the problem may also be caused by a hardware or software failure of the hard drive. However, usually the reason for the inability to boot in this case is a USB flash drive forgotten in the USB connector or an optical disc in the drive.

An endless cyclic reboot of the laptop even before the OS loads happens due to problems with the motherboard. Specifically, this may be an overheating of the south bridge or a short circuit. Their source is often USB breakdown. A poor performance of the power supply can cause the problem of quickly turning off the laptop immediately after the start of the download - it goes out due to the fact that the battery simply stopped charging.

Solving software problems that do not allow you to turn on your laptop

When suspicion does not fall on any physical module, you can try to restore or reinstall the OS to fix the problem. This will require installation media or a recovery disk (it is created directly in the system).

Bootloader Recovery

If, when trying to boot, the display shows an inscription that no operating system was found at all, you just need to restore the bootloader. Typically, these problems occur when installing a second, older OS. For example, when the computer already has Windows 8.1 installed, and you installed the “Seven” as an additional one, then problems with loading them are guaranteed.

However, the solution is quite simple:

1. Boot from the installation media;
2. Launch the command line in the initial installation window by pressing Shift and F10 at the same time.

To fix the problem, enter the following commands in sequence:

• bootrec /FixMbr - a new boot record is created;
• bootrec /FixBoot - new boot sector;
• bootrec /ScanOS - search for all installed Windows;
• bootrec /RebuildBcd - adds information about found OSes to the boot storage.

After the reboot, Windows should start up.

Windows Recovery

If the laptop does not work due to “broken” Windows, you will also need an installation disk or flash drive for recovery. There are different ways to carry out the operation:

He will be able to return the state of the system to a certain restore point, that is, until the moment when there were no problems with loading at all. If you want to completely reinstall the OS, in the diagnostic menu, select the partition to restore the OS to its original state.

And most importantly, don't panic. If yesterday you turned off the laptop and today it "died", deal with the problem with a cool head and do not act abruptly - this way you will definitely find ways to eliminate the malfunction.