I just built a new computer and it ran great for a couple of weeks. Now anywhere from 5 seconds to 1 minute after it posts it will just completely lock up and require a restart or power down. I haven't added any new hardware or OC'd anything so i'm kind of stumped.

Vista home premium 64bit
q9300 quad core
asus p5n-e 650i mobo
4x1gb corsair xms2 extreme memory
evga nvidia 8800 gtx 768mb
600 watts power supply



Any help is appreciated

Check your drivers. Espescialy your chipset .inf drivers. I have heard and seen issues with the i650 chipset with Vista. Check for Bios updates. If none are avalable from your MB vendor check the nvidia site.

Check every other driver you got.

Check temperatures. Check you power supply.

Download memtest 86 and make a CD and run a minimum of 4 passes on your RAM.

Seems like a lot but its a place to start.

Let us know if you find the problem.