Computer keeps crashing

[inkball32]

I just got a new computer built and installed Windows Vista Home Premium 64 bit. Everything works as perfect as possible except for a problem that keeps occuring. Sometimes while I am running a Program or a game, the computer will randomly crash and restart. The only stop message I get is usually about memory management, but none of the fixes i have looked up have helped. Should I try updating the BIOS, and how do i get arounf to doing that?

ASUS P5Q SE2 motherboard
Nvida GeForce 9800 GT
Corsair DDR2 4GB
Stealth Stream 600W power supply

 

[jitpublisher]

Is your memory running at the correct voltage and timings?

 

[inkball32]

How do I figure that out? Do I run memtest or something?

 

[jitpublisher]

Check in the BIOS.