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Rebooted or encountered an unexpected error. The computer restarted unexpectedly or an unexpected error occurred - how to fix it? Possible Windows errors at the stage of installing drivers or user programs. What to do

The essence of the problem: When installing Windows 7 at the last stage (after an error, after a blue screen, or after an emergency shutdown), the computer restarts cyclically and the message is displayed:

The computer restarted unexpectedly or encountered an unexpected error. Unable to proceed with Windows installation. To install Windows, click OK to restart your computer, and then restart the installation.

in English:

The computer restarted unexpectedly or encountered an unexpected error. Windows installation cannot proceed. To install Windows click OK to restart the computer and then restart the installation.

Solution:

When this error occurs, press the Shift + F10 keys on the keyboard, it will start command line, enter the regedit command, thus launching the registry editor. We are looking for the HKLM\System\Setup\Status\ChildCompletion section. In the section there is a key called setup.exe. If the key is set to 1, then double-click to change it to 3. Then close the registry editor and restart the computer

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One of the most disturbing and unpleasant signals for any user is the appearance on the screen of a system message that the computer has unexpectedly rebooted or an unexpected error has occurred. Naturally, a spontaneous restart can scare anyone. The saddest thing is that such an error can appear in completely different situations and indicate both conflicts in the software environment and possible problems with hardware. Next, we will consider the most typical situations in which this failure occurs, as well as the simplest methods for eliminating problems that arise.

The computer restarted unexpectedly or encountered an unexpected error: possible reasons for the failure

As for the occurrence of problem situations, there can be quite a lot of them. For some reason, it is believed that in most cases, the appearance of a notification that the computer has unexpectedly rebooted or an unexpected error has occurred is associated exclusively with computer hardware. This is not always the case, although it could be the root cause. Even when installing drivers or other software, the possibility of such a failure is not excluded.

But among the main situations, a few of the most common ones can be distinguished:

• exposure to viruses in a running system;
• clean installation or reinstallation of the OS;
• inconsistency of drivers or installed programs with “iron” equipment;
• problems related to the performance of hard drives and RAM sticks.

The impact of viruses and the method of their neutralization if the system cannot be loaded

It goes without saying that a viral impact on the OS cannot be ruled out. Many modern threats are able to disable any system. For example, you can even meet those that focus the maximum light power at one point on the monitor, which is why it simply burns out. But this is so, for example.

If the failure is really related to viruses, and restarting the computer in normal mode or with a safe start fails (the error appears again), the user has no choice but to check the system for possible threats exclusively using boot utilities like Kaspersky Rescue Disk. Such programs are recorded on removable media ( optical discs, USB devices) have their own boot records to start before Windows boot and can find deeply hidden threats not only on hard drives, but also in RAM. After starting from such a disk, in order to identify all possible threats, it is better to set not the standard scan offered in the default settings, but select all logical partitions and boot records using deep scan.

Installing or reinstalling the system

Perhaps the most common is the situation when a failure manifests itself at the stage of installing the system. This also displays a message stating that the computer restarted unexpectedly or that an unexpected error occurred. How to fix such a problem, few know. The situation is aggravated by another unpleasant factor. The fact is that you can restart the computer, but in most cases the error occurs again, and on subsequent restarts it loops.

What is the saddest thing, no means help, except for one. When a crash message appears on the screen, the first step is to call the command console using the Shift + F10 combination for this, and write the registry editor (regedit) call string in it.

In the registry in the HKLM branch, through the system catalog, the installation and status folders, get to the ChildCompletion section, in which the setup.exe key will be shown on the right. Either through RMB, or through a double click, you should enter the editing of the parameter and change its value from one to three, confirm the actions by pressing the OK button and restart the Windows installation after restarting the computer or laptop. Usually after that the problem disappears.

Possible Windows errors at the stage of installing drivers or user programs. What to do?

Unfortunately, a failure with a notification that the computer restarted unexpectedly or an unexpected error occurred can also manifest itself in a working system when the user independently installed drivers for some devices that do not suit them, or software, incompatible with either the system or the hardware. The problem, though unpleasant, but solvable.

If a normal restart does not fix the error, you can try to restart the computer and roll back by selecting from the start menu called by pressing the F8 key to load the last known good configuration or try to start in safe mode, then remove faulty drivers or programs that were recently installed and caused the OS to malfunction.

RAM Conflict Issues

An equally common problem can be called failures in the operation of RAM strips. In particular, this applies to replacing them or increasing existing RAM by installing additional brackets.

In this case, you will have to remove each bar in turn and reboot the system. If a problem bar is identified (when the system boots up normally), it will need to be replaced. Particular attention should be paid to specifications memory and motherboard. This applies to the supported volume, voltage and operating frequency. In other words, in a motherboard slot designed for 2 GB, 4 GB of "RAM" will not work. The same goes for installing 1600 MHz memory in a 1066 MHz only slot. And of course, the operating voltage should be taken into account.

Problems with SSD drives

Finally, the most unpleasant situation concerns SSD hard drives. For some reason, it is on them that such a failure appears most often. Of course, at the system installation stage, you can try to delete all logical partitions or perform a full format hard drive, but, as practice shows, in most cases, such actions do not give the desired effect.

One solution may be to switch the operating mode during system installation to IDE (this is a prerequisite), and use AHCI in a running system. These settings can be changed directly in the BIOS/UEFI Primary I/O.

Summary

If we draw a line under all of the above, we can note the fact that in most cases the error appears at the stage of installing the system. Other situations are not so common. If we talk specifically about RAM and hard drives, it is better to select equipment of the same brand, for example, install on Samsung laptops and a hard drive, and memory only from this manufacturer. In this case, the appearance of conflicts is excluded almost one hundred percent.

If you have the problem "The computer restarted unexpectedly ... (The computer restarted unexpectedly ...)", then you can solve it by reading this article.

I had the problem of an unexpected reboot and I couldn’t solve it for about a week and didn’t understand what was the matter, because I saw this for the first time. And I tried different methods. The described method helped me, but temporarily, after 2-3 reboots of Windows or installing any Windows drivers no longer loaded giving an error.

I tried different Windows versions, formatted my SSD drive via LiveCD, via Paragon. I did both quick and full formatting, which takes much longer than the quick one, which can be done with Windows installation. I burned different bootable flash drives, tried a bunch of options, but nothing helped - after a couple of reboots, Windows no longer loaded.

To solve the problem of an unexpected reboot, then at the time this error occurs, press Shift + F10(hold down the Shift key and press F10) to open the Windows console. Further type regedit and hit enter to open registry editor.

Next, you need to go to HKEY_LOCAL_MACHINE > SYSTEM > Setup > Status > ChildCompletion. To open the folder structure, double-click first on the HKEY_LOCAL_MACHINE folder, then double-click on SYSTEM, then double-click on Setup.

There will be a setup.exe parameter and a value of 1 in hexadecimal.

Instead of 1, put the number 3 and click OK.

After a couple of minutes or ten minutes, Windows will be installed and you can continue or start working.

Why does the error “The computer restarted unexpectedly, or an unexpected error occurred. Unable to proceed with Windows installation. To install Windows, click the OK button to restart your computer, and then restart the installation."

Finally I figured out the problem. , and later . After SSD installations disk problems were not big, although they always climb out on my laptop, but I solve them. But after changing the RAM, an unsolvable problem appeared for about a week and no online advice helped.

I decided to act: I took out my old 2 sticks of RAM and installed a new one. The computer worked the memory test passed normally, tested the memory for about 2 hours and no errors. But taking a new one RAM and putting the old problem solved. I was even able to enable AHCI mode for the SSD drive and install all versions of Windows.

Therefore, if you have a problem installing Windows and the error “the computer restarted unexpectedly ...” is displayed, remember what you recently changed on your computer and remove it by returning the old one.

I will order more RAM anyway, but now I will only take Samsung, as well as my Samsung SSD and Samsung laptop. Before that, I checked the RAM and it should have been suitable for a voltage of 1.5 Volts and for megahertz and in terms of volume supported by my motherboard. But in the end, after a long search for a solution, the problem turned out to be exactly in it. It is not compatible with my laptop for some unknown reason.

But as I recently looked again on the intel website and in the aida 64 program it turns out that my laptop supports a maximum of 1066 MHz, but for some reason it seemed to me earlier that it supports 1600 MHz. This is where I think my mistake was. There was an incompatibility in Megahertz memory.

Here is a video on this topic.

Approximately the error sounds like this: The computer restarted unexpectedly, or an unexpected error occurred…”. It can jump out at any stage of installing Windows 10, as well as later versions. operating systems. There are enough reasons for this, for example, a hardware conflict, bad BIOS firmware, viruses, hard drive problems or potentially dangerous programs that were installed on the PC before, and it will take a lot of time to find them. But, there is one effective way, to which we recommend resorting immediately, it is written about it in today's article.

The computer constantly restarts and an error appears - what to do?

We want to say right away that when this notification appears, neither the “OK” button nor the next OS installation will help out here. The message will appear constantly.

Better do it like this:

• As soon as this information is displayed, press the key combination Shift + F10;
• In the window enter regedit and press Enter;
• We pass along the path

If the above methods do not work

If the message "The computer restarted unexpectedly, or an unexpected error occurred" continues to "haunt" you, a number of recommendations.

1. Check PC for viruses and spyware;
2. Roll back the system to an earlier date;
3. Uninstall programs, games that were installed before the problem;
4. Delete the partition on the hard drive on which the OS is installed and create it again;
5. Check HDD for errors, sectors, etc.;
6. Try another ISO image of Windows 10;