PC crashes while gaming and sometimes during normal use

jpyron

Commendable
Jun 8, 2016
2
0
1,510
Components:
i7-4790
Sapphire R9 290
ASRock Fatal1ty H97 Killer
8GB RAM
600W PSU
Windows 10 Pro

Whenever I try to play a game or sometimes just during normal use my PC crashes and reboots itself. I have done the following: I updated all drivers (including the mobo driver), ran prime95 and memtest and I reinstalled Windows. So I assume it isn't the RAM or my processors fault but now I can't decide whether it is my PSU, GPU or maybe even my Mobo/HDD causing the problem. Have any of you guys experienced a similar problem and managed to fix it?