Odd screen in 3D apps?

[Sniper82]

I get this screen when I try to load any 3D stuff(Aero,games,ect)

http://img463.imageshack.us/img463/3914/dscf0948lo9.jpg

Is my 7900GT shot? Using Vista 32bit with latest beta drivers(tried 3 different versions with same results).

 

[Sniper82]

EDIT:figured out it only does it during 3D stuff and I have to power down with the power button. The system doesn't lock up the screen just does that.