Ever since I upgraded my video card to a ATI Radeon 9600, 256, my mouse and keyboard will just turn off at random times. I think it only occurs when the video card is in use. So say if Im playing a game, sometimes 30 minutes in or 2 hours in, the keyboard and mouse will turn off, and then about 5 seconds later, my entire computer reboots itself, which is very frustrating and annoying. Ive installed drivers, and that didnt help either. Why is this happening? My mouse is a Logitech Cordless MouseMan Optical and my keyboard is Logitech Cordless Desktop. I am running on Windows XP.