I have a Nvidia Geforce 4 4200 ti w/ 64 ram and whenever i try to play halo (demo) I can get into the game and the menus and things are fine but once i'm into about 3 or 4 seconds of gameplay, my computer turns off then i get the blue screen of death saying that there is a problem with my video drivers. The same thing happens when i try to install my favorite screen saver (i get it off of nvidia's site). Has anybody had this issue, or can somebody give suggestions?