GTX 660 cause what my PC Will reset by himself

renato_grullon

Honorable
Sep 25, 2017
15
0
10,510
I have a GTX 660 on my PC and when i play video games the PC restart by himself. Isnt the memory, cause i tested it, isnt the psu cause i hace a new one (EVGA 550w b3). I think what it's the Mobo PCI express, because when i put a he 6670 (low profile) the PC won't reset by himself. Please i need help!

Specs:
Cpu: Core 2 quad q6700
Mobo: P5n-e sli
Psu: EVGA 550w b3
1 slot ram ddr2 2gb 800mhz
X2 hdd 320gb + 120gb SSD (Windows 10)