Windows 10: BSOD after upgrading my CPU

Dear Microsoft Support,I recently upgraded my CPU from a Ryzen 7 7700 to a Ryzen 9 9900X. Since the upgrade, I have been experiencing frequent Blue Screen of Death BSOD errors. The error messages vary and include:FAULTY HARDWARE CORRUPTED PAGEPAGE FAULT IN NONPAGED AREABAD POOL CALLERSYSTEM SERVICE EXCEPTIONThese issues have been persistent and disruptive, and I am seeking assistance in diagnosing and resolving the problem.I would appreciate any guidance or troubleshooting steps you can provide to help me resolve these BSOD errors.Thank you for your support.

:)

 

PC reboots (no BSOD) on CPU stress

Hi fellow TPU members,

not too long ago, the box my gf's PC was transported in gave way on the stairs. Yes, you got it right, that sent a PC tumbling down a flight of steps alright.

Stuff broke. Also, stuff remained intact somehow.

I bought her a new case, new CPU cooler and we removed the floppy drive, so far so good. But the PC started crashing for no apparent reason, without a BSOD.

I tested:

• Memtest86+, left overnight, 0 errors
• Scanned the HDD for errors, nothing there
• Left FurMark burning up the GFX card and drawing some power, no problems there
• Ran Ubuntu from a Live CD doing nothing special, didn't crash
• Ran OCCT, Linpack, Prime95, all 3 caused reboots within minutes
• Oh, and I disabled "Restart on error" so I'm sure it's not a BSOD.

Now, I can still try and test something CPU intensive on Ubuntu, but my guess is the CPU didn't survive.
Before I do anything drastic like whippin' out the magic wallet and get her a new AMD quad, is there anything I didn't see?
I'm guessing the motherboard could be borkered as well, but can I check that other than replacing the CPU with a working one?
Any suggestions on which proggies I can use from an Ubuntu Live CD to stress the CPU?

 

[FS][US] CPU, NForce4 skt 754 motherboard (with PCI-express slot, rare!), DDR RAM

bump, CPU's stepping is now listed.

 

CPU upgrade no post

Thanks, Malneb for responding and your suggestions. Here is an update which I forgot to add, in my process list. 4a) Removed the CMOS battery, jumped the motherboard 4b) Removed the GPU and tried to boot History of upgrade, taken from working machine, seller has offered refund, so I don't believe it's the CPU.