i have just recently put together my computer i have a x800, and asus A7N8X deluxe board, an 80 gig western digital HD, 1 gb of kingston ddr and a amd 3200 processor. my problem is that when i enter windows whenever i try to do anything with graphics like play doom 3 which i recently purchased i either load into the game for like 2 seconds or i dont even get that far. My computer automatically restarts or it goes back to the desktop. I believe it has something to do with the video card, but im not quite sure.