Question Critical Process Died BSOD + SSD doesn't show up.

Aug 29, 2019
Some backstory:
I had 2 drives, an old af 120GB SSD with Windows installed on it, and an old af 1,5TB HDD for storage. Recently my HDD died so I removed it and reinstalled Windows.

My PC has been acting all weird ever since. My mouse driver seems to be missing every time I boot up my PC, even though I have reinstalled it every time. Sometimes everything becomes unclickable. Websites often crash in Chrome.

But now it has gotten really bad. My computer now freezes and goes into a BSOD (critical_process_died) only seconds after getting to the desktop. The pc then restarts and shows me the BIOS, where it seems my SSD is suddenly not there anymore. I can then do a hard restart and Windows will boot, but the computer will crash again, and the whole thing repeats itself.

Is this a problem with my SSD? Or could there be other causes? I am honestly lost. Really hard to diagnose it when Windows just crashes 10 seconds after booting.

Motherboard: MSI Z370-A Pro
CPU: Intel i7-8700K
GPU: ASUS GeForce GTX-1080Ti ROG Strix 11GB
RAM: 16GB Corsair Vengeance LPX DDR4 2666MHz
SSD: Samsung 840 120GB
OS: Windows 10 Home

Sorry if this isn't the right place to post this.