OK.
The Event System Log shows you are experiencing random restarts:
Kernel-Power - The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
These errors are preceded by the following error:
Kernel-Boot - Windows failed fast startup with error status 0xC00000D4.
Can you try "turning off" Fast Startup:
https://www.tenforums.com/tutorials/4189-turn-o...
Not sure if that will help the VRChat issue but it should improve system stability.
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.