My 7900 GT runs fine under Windows XP, but I experience exactly the same effect in Vista when starting a game.

I installed Vista in the spring, and experienced the problem, but at that time i went back to XP after 1 day searching for a solution.

I have just installed Vista again, in the hopes that the problem was fixed, but it seems it is not. I have updated bios, chipset, tried a number of different versions of DirectX, not to mention nvidia drivers, tried powerstrip, but nothing seems to work.

Hopefully it will be fixed soon - I didnt plan to upgrade myt gfx before the 9000 series come out.