Yeah, you were definately missing some drivers. The inability to change your display settings should have been the first hint...although it is weird to lose the mouse like that. Windows has default drivers for virtually everything, so you don't accidentally kill yourself by getting rid of something necissary. Stupid Windows, huh? Anywho, sounds like you're back on track, so you should think about making a stopping point, backing up things, and updating every hardware component you have. Mobo, mouse, video, sound, display, motherboard, chipset, processor, etc...