PC powers off when loading CPU and RAM intensive games.

DALI23

Reputable
Mar 7, 2014
1
0
4,510
Loading up DayZ and GTA IV causes my PC to turn off. It seems to be pretty consistent with those two. Especially when I Alt+Tab in and out of those games.

Does not seem to be a temperature problem, GPU and CPU are at about 60-70 C and 50C respectively.
Also did a severe stress test and played a simpler game like TF2 with 100% CPU usage and 85% memory usage and had the same problem. And ideas?

500W
AMD Phenom II x6 1075T 3.0
AMD HD 6850
8 GB whatever RAM
1 TB HDD
64 GB SSD