I too, am having the exact same problem. It happens only with certain games. I downloaded the demo for Dungeon Siege II, and it happened on that game. I have a brand new monitor and a brand new video card (Nvidia G-force 5500). I also have downloaded new drivers, DirectX, played with the video settings, etc. and nothing seems to work. I have an AMD Athlon 1.2G. I don't have problems with Dungeon Siege I (also downloaded). Is there anyone who can help PLEASE!!!