Windows Forum·65,810 discussions

Windows 10 cannot boot; system thread exception not handled BSOD

Tags: Operating Systems, Windows

Hi,

A friend asked for some help with their PC, a game of theirs wasn’t running. I must say I tried almost everything I could have come up with, but one thing: update Windows. They are running Windows 10 1607 64 bit.

The game I am talking about here is Assassin’s Creed Valhalla (for future reference).

Specs for the PC as follows:

Asus H81M-PLUS motherboard
2×8 GB 1600 MHz RAM
i5 4690 CPU
MSI AMD RX 480 GPU
240 GB Kingston A400 SSD (boot drive)
1 TB WD Blue HDD

More than capable of running said game, yet it doesn’t work. I tried updating the drivers to 21.10.2, drivers worked, but game still wouldn’t work, while any other would.

In any case, I tried to update Windows to 21H2, it told me it required a GPT partition table. So, I used MBR2GPT and converted the SSD to GPT, as requested. I made sure to change the motherboard settings to UEFI only, disable CSM and Secure Boot, but, lo-and-behold, the system throws a Winload.efi missing error.

After some headaches and rebuilding the boot record, it doesn’t give that error anymore, but now a BSOD, right after the loading animation initializes (the dots appear on screen): system thread exception not handled. Cannot boot to Safe Mode (same BSOD), Boot logging does not create the desired ntbtlog.txt file inside the Windows folder and the BSOD does not generate any dumps whatsoever. Startup Repair from a Windows 10 media disc cannot fix the issue, but seems to detect something.

Any advice to try and fix this? The data on this computer is very important to my friend, so I must find a way to make it as painless to them as possible (preferably meaning no Windows reinstallation).

My thought is I should find a way to remove all drivers and trigger Windows to rebuild its driver store, just like it does when freshly installed. Is there any way to do that?

Thank you!

Topic

Re: no boot

In reply to Windows 10 cannot boot; system thread exception not handled BSOD

If that data is really important for your friend, he should (have made) a backup. And certainly you should have done so before converting the disk.
Luckily, you can still do it after booting from Linux disc or stick (free to make).
Copy everything he doesn’t want to lose to an external hard disk or the cloud. Preferably even 2 different destinations.

Then go ahead with a clean install.

No backup?

In reply to Windows 10 cannot boot; system thread exception not handled BSOD

Odd to get this far without losing it all but the usual fix at this point is a clean install.

Now about those that say this wipes out the date. We avoid that by installing a new SSD of the size needed for the job. The clean install done we add the old drive on another SATA port so the user can get at their files.

If you continue working o a drive without backup, well, that’s a tale as old as time.

Generic reply to generic reply

In reply to No backup?

Okay, thank you!

OI

In reply to Windows 10 cannot boot; system thread exception not handled BSOD

nice

Reply To: Windows 10 cannot boot; system thread exception not handled BSOD

In reply to Windows 10 cannot boot; system thread exception not handled BSOD

Click Troubleshooting> Advanced Options> Startup Repair. Access the System in Safe Mode (Diagnostic Mode): Click Troubleshooting> Advanced Options> Startup Settings> click Restart> press the 5 or F5 key to access Safe Mode with Networking.

Regards,
Rachel Gomez

[Author]

Replies