Hello, my PC is fairly old (parts bought around 2012, I think), with GPU being the only relatively recent purchase:
PSU: OCZ StealthXStream 2 600W
MOBO: Gigabyte GA-Z77-D3H
CPU: Intel i5-3350P
GPU: GTX 1660 Super
RAM: Corsair Vengeance DDR3 2x4GB
It first started several months ago, where once...