PC won't start Windows. What to do if Windows won't boot. Why the computer won't turn on - the first step towards finding out the reason How to get into the recovery environment

In this article, we will look at situations in which a computer may not turn on or boot. We will also give some tips to solve such problems.

The computer won't turn on

(When you press the power button on the system unit, nothing happens: the lights don’t light up and you can’t hear the noise of running fans)

When the computer does not show any signs of working, the problem is in the hardware.

Solutions.

Step 1. First, check and rule out “inattentive” reasons:

— did you forget to turn on the button on the extension filter;

— whether the power supply toggle switch is turned off (located on the back of the system unit next to the place where the 220V cable is connected;

Step 3. If the problem is not solved, you should stop searching on your own and contact the service center!

The computer turns on but does not boot

(When you press the power button, you can hear the noise of the cooling systems, but the boot does not reach the desktop)

This symptom can be due to either hardware or software problems.

Symptoms of this problem are divided into 3 subspecies:

I. There is no image on the screen - neither the BIOS screen nor the operating system boot screen

Step 3. If the problem persists, try replacing the BIOS battery on the motherboard - type CR2032

Step 4. If the problem persists, contact the service center.

II. There is a BIOS image on the screen, but Windows OS loading is not visible.

Step 1. Turn off computer. Open the system unit and check whether the power cable and SATA cable are connected to the hard drive.

Disconnect and connect them again.

Step 2. Boot from the Windows distribution and perform a system restore.

How to create a bootable flash drive:

How to boot from a flash drive containing a Windows OS distribution:

How to enter Windows recovery mode: article will be added later

Step 3. Reinstall the system

Step 4. If the problem persists or periodically recurs even after reinstalling the system, contact a service center.

1. Do not place the system unit on the floor or other particularly dusty surfaces. Try to place the unit on a stand or in a special niche on a computer desk.
2. Clean the room more often, including wet cleaning. The less dust there is around the computer, the less often you will have to clean the computer from dust.
3. Clean the system unit at least once every six months. We recommend that you trust the cleaning of the system unit to specialists. However, if you consider yourself an advanced user, we recommend reading the article on cleaning your computer.
4. At least once every 3 years, replace the thermal paste on the central processor, video card and chipsets that have radiators.
5. Once every 5 years, we strongly recommend replacing the BIOS battery (type CR2032), even if the computer is working normally. It's better to do this in advance than it will be an unpleasant surprise at the wrong time.

It happens when a joyful user comes home, presses the power button on his faithful friend, but he remains silent. The computer simply won't turn on. A person begins to panic and call friends who understand at least something about computers, and those, in a stupor from such a direct question, without explaining the reasons and features, do not even know how to answer. And okay, if the equipment was turned on to launch the game, but if its launch was necessary for work purposes?

The computer just can't turn off and that's it. There is a reason for this, and more than one, so it is impossible to determine it without describing the features. But if you take a closer look at the signs of breakdown, then everything can be eliminated without difficulty. Such situations arise due to a variety of reasons. Some of them, after the problem is over, will only cause hysterical laughter, while others will empty your wallet.

Lack of electricity

It happens when a person just comes into the apartment, or just wakes up and immediately turns on the computer. But he, the infection, does not turn on. Thinking about what is the cause of such a tragedy takes a lot of time, but in reality there may simply be no electricity (after all, the TV, lights and other devices were not turned on at that time).
It’s all easy to check, and you shouldn’t go to the Internet for advice in such situations. But it may also happen that all the equipment turns on, but the computer does not. There is a possibility that there is no electrical power in a particular outlet.

Electricians know why this happens, but you can check it yourself by plugging in a hair dryer or other equipment. If it does not work, then the problem is in the outlet. The power supply must be connected to another source, and the outlet itself must not be touched until the technician arrives. If the reason is not in the outlet, then move on.

Computer power

It may be that everything is fine with the outlet, but the power still does not reach the computer. First you need to check the integrity of the cable and carry out a simple manipulation: remove it and insert it. If the appearance of the cord shows that it is time for it to go into the trash, then it is better to do so and buy a new one. Even if the reason for the poor PC startup is not in it.
Also, there is a special button on the back of the system unit. It is rarely used, but accidentally catching it and then wondering why the computer is not working is quite realistic. It must be switched to the “On” position.

power unit

If there is no problem with the socket and cord, but the problem remains, then you need to follow the electricity. After the cable it goes to the power supply, which is where we go. People are used to saving on everything they can. In computers, power supplies come to the forefront of saving money. People don't fully understand how important this piece of technology is.

If it breaks and needs to be replaced with a new one, it’s not a big deal and will cost $35-50. The problems will be more serious if not only the power supply is broken, but also other parts such as the motherboard or video card.

It’s also not worth buying new parts right away; you need to check everything first. The easiest way to do this is if you have another, working power supply. If this is not the case, then you will need a voltage tester. There should be a voltage of 5V in the power connectors between the black and red wires, and 12V between the yellow and black wires. Deviation is possible only within 5-7 percent; if more, then the unit urgently needs to be changed. To avoid future problems with the inoperability of other elements of the system unit, it must be replaced and not repaired.

When the power supply becomes faulty, the internal protection may become stuck. You need to unplug the power cable for a few minutes and leave the PC unplugged. If after this, it still does not start, the reason must be looked for elsewhere.

My battery is almost done

There is a small 3V lithium battery on the surface of the motherboard. It supports the memory system in which BIOS settings are stored. It is very difficult to check this battery before buying a computer, because in order to see it, you need to disassemble the computer. Yes, and checking performance by appearance is quite difficult. And it may well turn out to be used. Or it could have been sitting in storage for several years.

When the battery runs out, the BIOS system settings are reset. A sign of such a malfunction may be a constant time failure. Also, if there are problems with the battery, when you turn on the computer, it will ask you to save the BIOS settings. In some cases, the equipment refuses to turn on at all. You also need to check its performance using a tester. If it turns out to be non-working, or you simply don’t have a tester at hand, then you can replace it. These batteries are sold in every computer store and are inexpensive.

Checking the processor and hard drive

If the cover of the system unit was removed to check the power supply and batteries, then at the same time you can look at the processor and hard drive. To find out if the processor is working, you need to remove the cooler from it, start the computer and put your hand on the heatsink. If it starts to heat up, it means it is working. But it's also worth taking a look to see if the cooler is working. If not, the computer will shut down to avoid overheating, and it will not always start.

The hard drive could also be a startup problem. You need to check if all the plugs are tightly connected to it.

Dust in the computer

If there is a lot of dust inside the system unit, then it is not surprising that the computer does not start. To fix the problem you need a regular vacuum cleaner. The entire cleaning process consists of several stages:

Viruses

The reason why your computer won't turn on could be a virus. They become real computer killers; viruses can cause harm in a variety of situations. If a person uses the Internet and has a bad antivirus installed, or not installed at all, then viruses will quickly come to the computer from the World Wide Web. The best method of pest control is a high-quality antivirus. It must be official and should be updated periodically. There is no need to skimp on this software.

But there are situations when the PC turns on, but the operating system does not. How to run the antivirus in this case? You should try loading the last known good configuration. To do this, when you turn on the computer, press F8. After pressing the key, a menu will appear on the screen in which you need to select “Load last known known configuration”.

If you cannot start a successful configuration, you should try entering safe mode. You should also use F8 for this. When you press the key, a special menu appears on the screen in which you need to select the “Safe Mode” line. If you managed to start the OS, then you need to proceed as follows:

• Go to the Start menu;
• Select the “All programs” menu;
• Select “Standard”;
• Open the “Service” window;
• Click on “System Restore”;

BIOS Settings

Most users do not even know what kind of BIOS system this is. In fact, there is no need to get involved in this issue; it is better to immediately eliminate the problem. If the computer does not turn on due to incorrect BIOS settings, then you need to remove them, reset them or return them to factory settings. You can call this process whatever you like. If the PC still turns on, but only sometimes, then you need to go into the BIOS when starting the system. In order to enter it, you need to press the Del or F2 key (depending on each computer). Next, in the menu that opens (blue), click on Load Optimized Files. If the computer does not turn on at all, then you need to reset the BIOS in another way.

First you need to remove the cover of the system unit and find the motherboard inside. On its surface there is a “Clear CMOS” jumper, which is what we need. It needs to be “settled” in adjacent contacts, or simply removed for a few minutes. After that, put it back and start the computer.

Motherboard

If the settings are reset, the computer is cleaned of dust and everything is in order with the power supply, but the equipment still does not turn on, then the worst case scenario is possible. If the motherboard is broken, it will cost a lot of money. Especially if you want to buy a modern board, which will entail the purchase of a new processor, RAM and video card. As a result, you will have to update almost your entire computer. Well, it had to be done someday.
The process of replacing a motherboard is not easy; when replacing, you need to take into account the following factors:

• The new board must have the same processor socket;
• You need to check the number of RAM slots, they must be of the same type (DDR, DDR2, DDR3, etc.);
• The hard drive connection should be similar;
• The required number of slots for the required cards;

If all this is not taken into account, a new problem will arise. Now the user will be tormented by the question of why the new motherboard does not start. Also, new equipment may have different system settings, and you will have to reinstall the operating system.

The logical question would be, why not send the motherboard for repair? This can only be done if the cost of repair services does not exceed 30% of the price of the entire board. Repairing this part of the computer is a very complex process and there is no guarantee that it will work well in the future.

If all possible methods for solving the problem have been used, but the equipment still does not turn on, then you should not be upset. You need to call a technician who will determine the cause of the problem and fix it.

It often happens that the browser cannot open some specific site, which was previously available for viewing. At the same time, it opens pages of other sites perfectly and the user does not experience any difficulties - everything is normal. It would seem that the server simply does not work - the site has been disabled. But bad luck, if suddenly you access the same site, for example from a mobile device via Opera Mobile and the site opens perfectly in it.

If the described situation is familiar to you, then I will try to answer the question: why a particular site is not accessible from your computer.

Here, for example, is the standard error that appears in the browser Google Chrome: « Sorry, Google Chrome can't open the page blah blah blah…«:

First of all, if you encounter a similar problem, you do not need to immediately follow the advice to clear the cache and delete cookies, because if you do this, you will have to re-enter the password in Odnoklassniki, remember password In contact with🙁 First, try accessing the page from other browsers, such as Firefox, I.E., Opera. If the response to the site is the same in all browsers, then try the following: go to Opera, click on the button of the same name in the upper left corner and select “Compression mode”.

This function was previously called Opera Turbo. An important feature of this mode for us is that the site opens through proxy server, that is proxy server between you and the requested site. If, when you try to open the site in this mode, the same thing happens - the page does not open, then the site is really faulty or not maintained. It is quite possible that it will be turned on after some time.

But if the site does open, then we will try to narrow down the circle of “suspects.” I’ll say right away: if you cannot access Microsoft antivirus sites, then this is 200% a virus that blocks access. Here, from personal experience, I will say that only reinstalling the system will help.

Go to the folder C:\Windows\System32\Drivers\etc and find the file there hosts. Open it with a regular notepad and check if there are any entries regarding your site in the following format:

Such entries block access to the site and are caused by spyware and viruses. Just shorten the lines regarding your site, save the file to your Desktop (be sure to select the “All files *.*” file type when saving) and copy it back to C:\Windows\System32\Drivers\etc. Restart your computer and enjoy life.

If no suspicious entries were found in the specified file, then we are dealing with a completely different reason - BANOM Your his external IP address(or range of addresses) website hosting. This is not your fault; it happens that the hosting blocks the addresses from which attempts were made hacking, DDOS attacks. Just wait until the IP is unbanned - it will take about a week.

There may also be a simple routing error. A similar problem is solved within a day or two.

And so, you spend a pleasant evening at the computer - play, chat, surf the Internet, and Windows promptly carries out your commands. Everything is fine! Idyll! However, you should not think that this will always be the case. Know: the insidious Windows is preparing a dirty trick for you. She is just waiting for the moment when some urgent matters overtake you in order to... show you nothing. More precisely, it won’t boot.

Windows boot failure is an ordinary occurrence, but according to the law of meanness, it usually happens when the computer is really needed. So that the situation does not take you by surprise, it is important to prepare for it in advance. Let's talk about what to do if Windows 10 won't boot, why this happens, and what every user should have to solve this problem as quickly as possible.

Why won't it load?

The reasons for the “dozens” being unbootable can be software or hardware. Software problems are associated with the deletion (damage) of boot and system files and/or registry sections responsible for launching. They are usually to blame for:

• Installing another operating system on another partition of the drive (the new OS replaces the old bootloader with its own).
• Experiments with disk partitions - compression, merging, partitioning, formatting, etc. A typical error, which is precisely a consequence of this, is “ ” (the system boot loader is compressed).

• Unskilled manual editing of the system registry.
• Using various “tweak cleaners” to speed up and decorate the system, which “accidentally” change the registry keys responsible for startup, patch files, etc.
• Windows updates installed incorrectly or the PC shuts down during the installation of updates.
• Viruses and antiviruses. Don't be surprised, the latter can cause no less harm than the former if used thoughtlessly. It's like swallowing pills indiscriminately, hoping that the right one will be among them.
• Faulty hardware drivers. Booting in such cases is usually interrupted by a blue screen of death, sometimes indicating the name of the driver that caused the problem.
• "Clumsy" applications in autostart. The failure occurs in the late stages of loading - shortly before the desktop appears.

Hardware reasons for Windows 10 not starting:

• Changing the order in which bootable media is polled in the BIOS (the computer searches for the Windows boot loader not on the system disk, but, for example, on flash drives).
• Connecting the drive to a port on the motherboard that is different from the one on which it worked before - if the failure occurred after removing and reinstalling the hard drive into the computer. It appears as an INACCESSIBLE_BOOT_DEVICE error on the blue screen of death.

• Faulty or poor connection of the system drive. Often appears with the message “ ” (bootloader unavailable) on a black screen. Sometimes - stops, restarts, BSoDs at any stage of loading.

• RAM malfunction. As with disk problems, it manifests itself with reboots and blue screens at any stage of startup.
• Failure of video subsystem elements. Windows may boot, but you won't see it because the screen will remain black. Sometimes you can tell that the system has booted only by a characteristic sound.
• Other hardware problems, such as motherboard, peripherals, etc.

It's better to prepare for the worst in advance

Since 80-90% of cases of Windows 10 not starting are due to software failures, today’s article is devoted to methods of dealing with them.

So, to restore normal Windows startup, the computer needs to be booted into the recovery environment. If you have previously used Windows 7, then you know that this very environment is installed on the disk along with the main system. And to enter it, you need to open the menu of additional boot methods (by pressing F8 after turning on the computer) and go to the “ Troubleshooting».

The “top ten” also has a recovery environment, but since its loading time has significantly decreased compared to Windows 7, the interval when you can call the boot menu has also become much shorter. There is only one chance left at this time to press the desired key (more precisely, the combination of F8 and Shift): if the system is installed on an MBR hard drive and the fast startup option is disabled in the power settings of the PC or laptop. If the system is on an SSD or GPT hard drive, you will need bootable media.

For emergency recovery of Windows 10, it is optimal to keep its official distribution on a DVD or flash drive, and of the same bit size as installed on the PC. As an alternative, you can use the downloadable utility package MS DaRT 10 (Microsoft Diagnostic and Recovery Toolset for Windows 10 ).

MS DaRT distributions (formerly called “ERD Commander”) are officially distributed only through a paid subscription, but they are easy to find on the Internet. For example, on torrent trackers. Windows 10 images are available for download from .

As an example, I will use the home edition of Ten, recorded on a bootable USB flash drive, since it has everything you need.

Booting into the Windows 10 recovery environment

If the download fails, the “ten”, as a rule, tries to self-repair. When she succeeds, the user does not receive any notifications; it just takes longer to start the computer than usual. If unsuccessful, a message may appear on the screen, as in the screenshot below, but more often it will just be a “Malevich square” with or without a cursor, or a blue screen of death with a sad emoticon.

The failure option shown in the screenshot can be considered relatively favorable. By clicking, " Extra options"You will be taken to the recovery environment installed on your hard drive, and you will not have to boot into it from external media. But we will consider a more severe case, when the system does not show any signs of life.

Connect the media to your computer, reboot, and make it the first boot device.

The window that you will see first after booting from a flash drive (DVD) will prompt you to select the system language. If Russian is selected, click " Further».

You will then be prompted to proceed to install or restore Windows. Click " System Restore».

On the screen " Action selection» click « Troubleshooting" Here you are.

Tens launch recovery options

In the recovery options section (screen " Extra options") there are 5 subsections:

• System Restore. When you select this option, a standard Windows utility is launched. rstrui.exe, the purpose of which is to roll back the system to one of the saved checkpoints.
• Restoring the system image. Launches the Windows Deployment Wizard from a backup created by the OS's own tools.
• Boot recovery. Corrects errors in boot files and partitions.
• Command line. Allows you to run various system utilities.
• Return to the previous build. Rolls back to a previously installed version of the OS if it was upgraded to Windows 10.

Rollback to a checkpoint

Returning to a newly created checkpoint is the best first aid remedy for all types of system failures, including when you do not know their cause.

Clicking on the first item most likely launches the recovery utility you are already familiar with. All you have to do is select the date and time you want to rollback to and follow the on-screen instructions.

To use this option, you must have at least one saved checkpoint and a properly working system restore function. If the latter was disabled before the failure, skip this step and try other methods.

Startup Recovery

This option effectively helps in case of damage or deletion of boot files, for example, when installing an additional OS on another disk partition after Windows 10. And also in case of accidental formatting or other manipulations with the “System Reserved” partition.

Command line

The command line itself does not restore anything, but it makes it possible to launch other tools. So, with its help we can open Windows Explorer to see the installation location (partition letters in the recovery environment and during normal system booting usually do not match), run the system file error fixer, registry editor and bootloader recovery utilities.

If rollback to a checkpoint and auto-recovery at startup (the first and second options) did not give the desired result, a console utility often helps to raise the “tens” load BCDBoot. It recreates the hidden “System Reserved” partition and copies boot files from the Windows directory to it.

For BCDBoot to work correctly, you must specify the location of the Windows folder on your hard drive. To find out, you can use the utility Diskpart, but I think it’s more convenient to do this through Explorer.

So, to get into Explorer, open the command line and run Notepad in it ( notepad).

While in notepad, go to the menu “ File", select " Open" and go to the folder " This computer" Next, let's go through the disk partitions and determine which of them contains the system directory. In my example this is drive D.

Next we return to the command line and execute the instruction:

BCDboot D:\Windows

Please note that your path to the system folder may be different.

In 80% of cases, this is enough for the “ten” to start normally. But in about 20% of cases the command does not work correctly - it does not restore all boot files. To help the utility a little, before executing the instructions on the command line, you need to format the reserved boot partition (in my example, drive C) in FAT32. This can also be done using diskpart, but I find it more convenient through Explorer.

The following two console commands recreate the boot records of the entire drive (MBR) and the system partition (VBR). They are used to solve problems with running Windows on MBR disks.

Execute commands one after another in this order:

bootrec/fixmbr

bootrec/fixboot

If you accidentally run them on a GPT disk, nothing bad will happen.

In some cases, startup problems arise due to damage not to boot files, but to the main system files, for example, after a virus attack. As you may know, there is a special utility in Windows to fix them Sfc.exe. So, thanks to the command line, you can also run it in the recovery environment.

The command to find and fix errors in protected system files in the recovery environment looks like this:

sfc /scannow /offbootdir=D:\ /offwindir=D:\

Parameter offbootdir determines the location of the main boot partition (in my example, as you remember, this is drive D), and offwindir– path to the system folder.

Using the command line, you can also fix registry errors on an unbootable system. But, unlike previous instructions, this requires certain experience and qualifications, because the user needs to know exactly what to correct and what erroneous entries should look like normally.

I will not dwell on registry errors that lead to Windows 10 boot failure, since this is the topic of a separate large article. I will only describe the method for launching the editor RegEdit.exe in the recovery environment and open the registry files in it so that you have the opportunity to fix the errors that you are aware of.

So, to launch the editor, write the word on the command line regedit and press Enter.

You will see that in the utility window that opens there is already some kind of registry, but not the one you need. Before us is our own registry of the recovery environment, and we are interested in the main system.

To load Windows 10 registry files into RegEdit, select the section in the left half of the editor window HKEY_LOCAL_MACHINE or HKEY_USERS, open the menu “ File" and click on the item " Load bush».

In the Explorer window that opens after this, go to the folder D:\Windows\System32\Config(your drive letter may be different) and select the desired file.

Files without an extension in the \System32\Config folder are the components (hives) of the Windows 10 registry. The main ones are circled.

Give the hive any meaningful name (it will be temporary until you unload it) and click OK.

Next, we will open the section into which we loaded the bush, and here it is - in front of us, available for editing. In my example this is the registry file software, which I temporarily renamed to soft_win_10.

After making the edits, go back to the editor menu “ File" and click " Unload bush».

Return to previous build

This recovery method is available for a short time (10-30 days depending on the license terms) after upgrading Windows 7 or 8 to Windows 10. It is only possible if you save the files of the previous OS, which are placed in the Windows.old folder.

When reverting to a previously installed build, the user's personal files will remain intact, but everything done since the update will be undone.

Restoring a system image

Restoring an image from a backup helps to restore the system to functionality in case of any problems, but the problem is that almost no one creates these images.

If you are an exception to the rule and the happy owner of a relatively recent backup copy, select the item marked in the screenshot from the list of parameters,

Tell the recovery program where to store the image and follow its instructions.

All data from the inoperative OS will be replaced with working copies from the archive. If it contains user files, this will also affect them.

Happy recovery!

Also on the site:

Windows 10 won't boot: why this happens and how to restore startup updated: April 23, 2017 by: Johnny Mnemonic

What to do if your laptop or computer won't boot. Possible problems and ways to solve them.

If your PC or laptop won't boot, don't panic. Although the problem may be serious, you can most likely fix it yourself.

Problems with loading a PC are not always the result of a serious breakdown of its hardware. Often this is a loose wire, a blown fuse, or an unsuitable driver for the device. Let's look at the most common faults and ways to solve them.

Check power supply

• Laptop

This is one of the most common problems. And in different versions. From using the wrong voltage to a blown fuse in the connector. There is also a non-working socket.

First of all, check if the battery has a charge. If you are not sure and there is no indication, remove the battery and use only the charger.

Don't forget to check that the charger is from your laptop. Often laptop manufacturers use connectors of the same size. Especially if it is one company. And if there are a lot of chargers, it’s easy to confuse them and connect the wrong charger to the device, which gives a different voltage or insufficient current. After all, other gadgets also use chargers. But hardly the same voltage as a laptop. A laptop usually requires 16-20V.

Then, check the fuse in the connector. The easiest way is to remove the old fuse and install a new one that is probably good. If you have a spare power cable, try it. This is a faster option for checking the fuse.

Check the power cable. Its weak points are at the ends, at the point of connection to the black box and at the connector for connecting to the laptop. If you see colored wires, it's time to buy a new cable.

• Desktop PC

The desktop computer also has power problems. And the first thing you need to check is the fuse in the connector. There is a fuse in the power supply itself, but to check you will need to open the PC case and remove it.

One of the most common computer power failures is when your computer suddenly turns off and won't boot again. Start your search with the Power button.

Alternatively, connect the appropriate motherboard pins together (check your motherboard manual) and remove the power button.

Check your monitor

• Laptop

Disconnect any external displays. Including monitors and projectors. Make sure they don't interfere with your laptop's boot time.

If the laptop's power light is on and you can hear the hard drive or fan running, but there is no image on the screen, go to a dark room. Check if there is a very weak image on the screen.

If there is still a faint image, it may be the Windows logon screen, most likely the display inverter has stopped working. This component changes the direct current supplied from the network or battery into the alternating current required by the monitor.

Replacing an inverter isn't too difficult, but it's critical to avoid mistakes and buy the right part. Since inverters are not cheap, you cannot afford it.

If your laptop boots but there is no image, even a weak one, the LCD panel is most likely faulty. Replacing a laptop screen is certainly possible, but it is difficult and certainly not cheap. If the laptop is old enough, it is better to consider buying a new one.

• Desktop PC

In this case, the easiest place to start is by replacing the video cable, power cord, or monitor itself. If you have the opportunity, change them one by one and see what happens.

Remove any USB devices and memory cards

Assuming that everything is in order with the power supply and the monitor, the next culprit for problems with booting the computer may be the USB device and memory card. Moreover, leaving a memory card or USB device in the port is a classic option.

Typically, the BIOS reads removable storage media (including memory cards) before Windows boots. It could also be a CD left in the DVD drive, check there too.

Try a recovery disk

If you see error messages, or the system freezes and won't boot before you log into Windows, try using . You can use the Windows installation DVD or . Run any of these drives and try to resolve the problem. If the malfunction is caused by a virus, use special tools from antivirus software manufacturers.

Boot into Safe Mode

If you can't boot your computer normally, there's always the option to log in securely. The standard method is the F8 key.

If you go into , you can undo any changes you've made. Anything that causes your laptop or computer to stop booting. Uninstall a recently installed program, updated driver, or create a new user account if the old one is damaged.

If you see an option to restore your computer, try it, although you will need the Windows installation disc to do this.

Remove defective hardware

If you recently installed new RAM or some other hardware, this could also be the reason why your PC won't boot. Remove them (reinstall old ones if necessary) and try again.

If your motherboard has a built-in LED readout that shows POST codes, look for a manual or look on the Internet what these codes mean.

Quite often it is difficult to start a new self-assembled computer. In this case, the best option is to disable everything except the minimum required to boot the BIOS.

• . Along with the radiator.
• . If the motherboard has graphics output, remove the graphics card plugin.
• One . Remove the rest and leave one module in slot 0 or as the manual recommends.
• Power supply
• Monitor

All other equipment is not necessary. No hard or optical media or any other PC components are required to run Windows.

The most common reasons for a newly built computer to fail to boot are:

• The power wires are not connected correctly to the motherboard. If your board near the processor has an additional 12v connector, make sure it is connected correctly, in addition to the large 24-pin ATX connector.
• Components are not installed correctly. Remove memory, video card and processor. Reinstall them again, being careful not to allow any bending of the pins on the processor, and in the processor socket.
• The power button wires are connected to the wrong pins on the motherboard.
• The power cables are not connected to the graphics card. Make sure that if your GPU requires it, the PCI-E power wires are connected correctly.
• The hard drive is connected to the wrong SATA ports. Make sure that the main drive is connected to the SATA port of the motherboard chipset, and not to a separate controller.

Sometimes the computer does not boot because the hardware has failed. A common problem is hard drives. If you hear strong clicks, or the hard drive spins up and turns off several times, these are signs of its breakdown. Sometimes people take the storage media out and put it in the freezer (in a freezer bag) for several hours. However, this solution is usually temporary. Buy a new hard drive and transfer your data faster.

Get a new hard drive and start the build again. We dare to hope that everything will work out for you.