Hi. New to the forum. From Sweden so exccuse my spelling =) I bought a computer for my brother thats studies, so he got limited money. The computer was sold to us as defect (no picture).
 
The problem is that the GTX660 SC 2gb card works. As long as Windows dosen´t load any drivers. Failsaif and bios works. But after we seen the Windows Loading screen when booting normaly the screen goes black. This also happens with the driver windows download. I have tried all (ALL) drivers from 304.xx to 334.xx same issue.
Flashed the Bios to x.64 from x.60 with was the one the card was deliver with.
Tried my rig, my mobo P8Z68, (my PSU 850W) and my CPU i7 2600 same issue.
Tried both DVI and HDMI ports.
 
Have a god day and tanx for the help in advance.
 
//Håkan
Edit: Found a similar problem on the 400 series with the IRQ ports, can it be the same here?