I have had a PC for about 7 years already.
Specs:
Mobo: ASUS Prime Z270M-Plus
CPU: Intel Core i7 -7700 Quad Core
GPU: GeForce GTX 1070
RAM: 2 sticks with XMP enabled
PSU: Chieftec Polaris 1250W (it was not meant to be used in this PC, but used anyway)
Symptoms:
1. Sudden system instability...