Hi guys, i have this problem when i play anything 3d. I play unreal tournament or anything that has a 3D environnement and my PC reboots after 3 seconds or it can go as long as 5 minutes, but always with the same result sooner or later, a reboot. I've tried stock speed on everything (it wasn't OC'ed that much) i've tried reseating the video card (an ATI 9500 pro btw on a gigabyte 7-vaxp) my cpu is well seated, it's not overheating,temps are more than fine.Voltage on my ps are a little off but i cant beleive it's the cause. Can someone help, i'm out of ideas