Computer Crashing while playing high end games

[snowboarder8989]

I recently purchased a new video card and installed it into my computer. While playing games, the PC crashes. I had assumed that the problem was my weak power supply, so i replced it with a new 500W psu. This helped, but the problem still persists. Specs:

CPU: AMD Athlon XP 3200+
Motherboard: nForce 2
GPU: Radeon x850 pro
1024 PC3200 DDR RAM
integrated sound
Windows w/ SP2

 

[SNGX1275]

1.Update your video card drivers.

2. Check your temps in the BIOS immediately after the crash, maybe its getting too hot.
2b. Or run with the side of the case off and a fan blowing on your components.

3. Run Memtest86 overnight, and for as long as you can.