[Solved] Possible CPU error, how to see if it is?

I recently built myself a computer, it was an i7 computer. When i was playing some games, the screen just froze and vibrated. I turned off my computer and it didn't boot. When i cleared the CMOS it entered BIOS and then started booting windows. However it freezes during boot, i have run a memory test with no errors for one and a half hours, booted with one hard drive, one DIMM and tried reinstalling Vista. Currently i think that it could be a CPU error, any idea on if it could be and how i can test for it?

Core i7 920
Corsair DDR3 i7 Ram
ASUS P6T Deluxe motherboard
Nvidia 9800 Gx2
Seagate 500gb
Kingwin mach 1 800W

any ideas on what it could be?

That is Core i7 socket LGA 1366 he would need another Core i7 to test.

Hmm... Good point.

You could try swapping out the Hard drive to see if that's the problem, (essentially, just swap them out and try to reinstall.)

CPU's very rarely fail like that if it is working properly at the beginning then it eithe works or fails to totally dead. It is more likely to be motherboard, graphics card or PSU.

Yeah thanks for the grease tip, seems that the large quantities of dust had jammed it and it wasn't booting correctly it did however corrupt a file which i rapidly fixed ! Again thanks a lot noodle64 also everyone else for their comments!