Computer just produces a blank screen randomly.

[Azureth]

Specs of computer:

Mobo: ABIT IP35-E LGA 775
Proccessor: Intel Core 2 Duo E4500
Graphics Card: MSI NX8800GT 512M OC GeForce 8800GT 512MB 256-bit GDDR3
Memory: mushkin 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800
OS: Windows Vista 64-bit.

A little backstory: I had this computer build about a month ago, when I first got it I was browsing deviantart when my screen just turned pure white, nothing I pressed got out of it, couldn't see the mouse or anything. I restarted my computer and went back to deviantart and around 3 minutes later I get the same issue except now it's pure black. However, once I started using Firefox it seemed to go away until I rebooted my computer and it did it at the login screen, rebooted did it at the login screen again after about 3 minutes.

I play lots of games and it didn't do it while playing any games....until just about 30 minutes ago, just walking around and a pure black screen comes up (though I can hear the sound), tried alt+tab, ctrl+alt+del, nothing.

I ran memtest for around 6 hours but no errors came up. Anyone have any idea what could be wrong?

Oh, and I have all the windows updates and updated drivers for everything.

I'm not overclocking either.

 

[bmorton18]

hmm...mine has been doing that now too...cept mine only does it in CoD4 for like 10 seconds...pure black screen...can hear sound...but goes away after a few...wish I knew what was causing it so I could tell ya how to fix it..