Question Complicated crashing behavior, need help

[Macul153]

Specs:
4090
12900k
64GB RAM DDR4
2TB NVME Samsung SSD (990, but this PC is only about 5 months old so I don't think it's the old samsung issue they had)
1000w Corsair PSU

What it's been doing:
Started out with it crashing to black screen and restarting, only when playing VR games. It gets worse the longer it's on and gets to the point it crashes when you even launch games.
It has since moved to BSODing and throwing the codes "CRITICAL_PROCESS_DIED" most of the time and "0xc000021a" a couple times in between
It just went to black screen again when playing a game.

What I thought it was:
CPU thermal shutdown because it was hitting 100c on one core within 30 seconds of cinebench. It has since been repasted and thermals are back down to normal

What I think it is:
PSU is underrated/OCP is tripping early.

What we have tried:
All the usual sfc/dism/chkdsk commands show nothing, tried a new wall plug, and a ton of other things aswell

Logs:
Event viewer shows Kernel Power 41 for every crash that has happened, BSOD or otherwise.
I'd love to post the minidump file but the BSODs aren't creating any files, whatsoever for some reason.


A new 1200w psu is coming in the next few days and hopefully that fixes it, but I'm coming to y'all to ask if you have any other ideas to what it could be off all that combined behavior.

 

[geofelt]

Take windows out of the situation.
Run memtest86 or memtest86+
They boot from a usb stick and do not use windows.
You can download them here:

MemTest86 - Official Site of the x86 Memory Testing Tool

MemTest86 is the original self booting memory testing software for x86 and ARM computers. Supporting both BIOS and UEFI, with options to boot from USB.

www.memtest86.com

Memtest86+ | The Open-Source Memory Testing Tool

Memtest86+ is an advanced, free, open-source, stand-alone memory tester for 32- and 64-bit computers (UEFI & BIOS supported)

www.memtest.org

If you can run a full pass with NO errors, your ram and hardware should be ok.

Running several more passes will sometimes uncover an issue, but it takes more time.
Probably not worth it unless you really suspect a ram issue.

Assuming memtest runs ok, then take drivers out of the situation.
Boot in safe mode(f8)
If you run well in safe mode, selectively reintroduce drivers and started tasks.

 

[Macul153]

Take windows out of the situation.
Run memtest86 or memtest86+
They boot from a usb stick and do not use windows.
You can download them here:

MemTest86 - Official Site of the x86 Memory Testing Tool

MemTest86 is the original self booting memory testing software for x86 and ARM computers. Supporting both BIOS and UEFI, with options to boot from USB.

www.memtest86.com

Memtest86+ | The Open-Source Memory Testing Tool

Memtest86+ is an advanced, free, open-source, stand-alone memory tester for 32- and 64-bit computers (UEFI & BIOS supported)

www.memtest.org

If you can run a full pass with NO errors, your ram and hardware should be ok.

Running several more passes will sometimes uncover an issue, but it takes more time.
Probably not worth it unless you really suspect a ram issue.

Assuming memtest runs ok, then take drivers out of the situation.
Boot in safe mode(f8)
If you run well in safe mode, selectively reintroduce drivers and started tasks.

They don't have the means right now to get a usb flashdrive, wild I know. But I will bear this in mind if the PSU doesn't fix it. Already looking at doing a fresh install of windows.


Already did the whole DDU song and dance, and did a clean boot to make sure it wasn't extra software causing it, but will try safe mode aswell.

Thanks for your time!