Random Restarts

Noted you are using a version of build 2004, and you had problems when running Win 7.

Hi, first try to eliminate the possibility of a hardware problem. Boot from a live boot disk, ideally of similar build, wait for 'long enough' and see if any restarts occur. E.g. Kyhi's or Bob Omb's (Google).

Are you overclocking? Is your RAM compatible with your MOBO and ram sticks identical?

Run RAM checks and disk checks. E.g. Hard Disk Sentinel (trial) - best report incl. SSDs


Consider possible PSU problems.
Check not overheating.

Back up first - hopefully you are already using disk imaging routinely- so, so often recommended here- e.g. Macrium Reflect (free/paid) + external storage for image files.

Try elimination. Start with a clean boot.
Then disable further non-MS items using Autoruns from MS.
If you can reach a state where the restarts are not occurring, you may have a chance of identifying a cause.

Rund stress tests e.g. Prime95.
See:
Enable and Disable Driver Verifier in Windows 10

Is BitDefender still the AV in use

Thank you for replying.

Boot from a live boot disk, ideally of similar build, wait for 'long enough' and see if any restarts occur. E.g. Kyhi's or Bob Omb's (Google).
I cannot run any test "long enough" because the restarts can happen from 2h to 20 days apart. I don't know what "Kyhi's or Bob Omb's" is

I don't think you understand what a live boot disk is.
A live boot disk lets you boot from something totally independent of the O/S installed on your PC.

If your PC crashes when booting independently of the disks in your PC from a known stable installation, that leaves the problem as hardware. If so, there's no point trying to fix your installed O/S.

You don't know what Kyhi's live boot disk is, or Bob Omb's.
Fine. I told you to use Google.

You haven't so I will do that for you.

Search string:
Kyhi's live boot disk

URL: (ignore the strange text name).
You are being redirected...

Go there, follow the yellow brick road and download the iso file.
Use that to create a bootable disk.
Configure your PC to boot from that.
Boot your PC from it.
See if your PC is stable- or not.

If you prefer to use Bob Omb's:

search string
Bob Omb's live boot disk
URL:
Bob.Omb's Modified Win10PEx64 - Best Rescue Disk 2018

Do likewise.


Google helps you find out about things you don't know about. If you look back at my post you had enough information to do that.

I suggest you try the POSSIBLE simple answer first
Uninstall BitDefender and use the included Windows Defender.
Presuming you have the necessary details to reinstall BitDefender that will NOT cuase you a problem
There are and have been for sometime reports of BitDefender causing restarts on 10 and IF you had BitDefender on 7, there were also reports of it occuring on 7.
The difference in frequency may just be the change in update frequency on 10 and indeed on BitDefender

Some prople are reporting a restart every time they shutdown.

Are you or are you note getting Bluescreen errors and restarts?

Turn of automatic restart so if a Bluescreen does occur it will stay there until you reboot.

You can turn off automatic restart so you can read information when you get a BSOD screen:

Right click on This PC.
Click Properties > Advanced System Settings
Under Startup and Recovery click on Settings.
Under System failure, uncheck Automatically restart.

If you get a BSOD, take a picture of it with your cell phone and post here in your thread.

Meanwhile, follow the instructions at the top of your thread:

Please read the instructions here: Blue Screen of Death (BSOD) Posting Instructions

I still recommend you uninstall BitDefender.
Clearly it was not the cause of the occasional problem you mnetioned when you had 7
However that does not mean that it is not responsible for many of your problems on 10.

If it proves I am wrong you can simply reinstall it.