So recently my computer started givin me a BSOD whenever I tried to start a game or a movie or if I ran dxdiag and noticed that when running dxdiag if I let it skip direct3d there was no problem. So I downloaded and installed the latest directx 9.0c from Microsoft and the latest driver for my nVidia Geforce 7800 GS. Now movies run and dxdiag runs without problems, but .wmv files only show a green screen (the sound works fine) and when I run games I get a blank black screen (again sound is fine and the custom mouse appears no problem). I'm lost - PLEASE HELP!!