PC Reboots When Launching games

[rph]

Hello

I have a brand new PC just assembled it below are the specs

Asus Rampage Motherboard
Intel QX9650 CPU (3.0GHz Extreme Edition 12mb cache)
2 x 2Gb DDr2 Memory
1x ATI Radeon 3870 X2
1xSeagate 1TB HDD
1xDVD/CD
1xthermaltake 700watts Psu

Windows Vista 64bit OS

everything works fine until i start a game such as crysis or battlefield 2. the screen goes black and then the pc kind of shuts down and reboots after a couple of seconds.

What can be the problem?

Thx

 

[Standpoint]

Either the video card is bad or overheating, or possibly your CPU cooler is not good enough.

I had this same issue with my rig, found out that the heat sink I had for my CPU was not good enough. I replaced it with a much better cooler and haven't had the problem since.

 

[crashthenet44]

Did you do any sort of stability testing after you built this thing? You need to at the very least run Memtest86 and Orthos for a few hours each to see if your build is stable.

 

[hossdaddy]

I would look at your ram. Seeing as how the game loads itself into the ram to play. If you are overloading the ram or its not seated correctly you could have troubles. Run memtest 86+ for a while and see if its stable. Or you could run the blended test or orthos or prime95(tests cpu and ram together).