Is it possible to boot the computer without a PS/2 mouse and then plug one in later and use it. If so how would I do this? I've tried plugging it in and going to Device Manager and clicking "Scan New Hardware Changes", but it didn't find anything. Nothing shows up in my devices list in the mouse cpl in Control Panel. I know you can do this on most laptops which makes me think that I should be able to on a desktop PC. Any ideas?