issue.. graphics card?

[Wittig]

When I play games, Diablo 3, for instance. my computer will randomly shut off or go into an idle mode - power button goes from white to yellow and my monitor will say "entering power save mode". Is this a graphic card issue? if so.. how might i fix it?

 

[smeezekitty]

Full specs?
My guess would be either overheating, or a bad PSU

 

[Wittig]

Processor -920 @ 2.67 Ghz
memory - 8192 ram
video card - NVIDIA GeForce GT 220

Sorry.. im not a big computer guy. What else would you need?

 

[smeezekitty]

Processor -920 @ 2.67 Ghz
memory - 8192 ram
video card - NVIDIA GeForce GT 220

Sorry.. im not a big computer guy. What else would you need?

Your PSU wattage and brand and GPU and CPU temps under load