Have you tried to test your PSU using Multimeter? Or if you can test your PSU on another PC.
Also try to test your RAM.
Try running the MemTest86+ diagnostic tool to test your Memory(RAM).
-Run MemTest Overnight(8 passes).
Click this Link: https://www.tenforums.com/tutorials/14201-memte...
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.