I tried this morning to install Windows XP Pro SP2 on my Mac Pro. I clicked on "Start Installation" and my computer restarted and went to a gray screen. The gray screen stays up for an indeterminate amount of time and the computer does not start up again at all. I've had this problem once after I used migration assistant to bring my old hard drive to my new one, but that was remedied with a PRAM reset (ctrl, cmd, p, r). However, this time it will not work at all. I thought that maybe if that install disc were no longer in there it wouldn't be trying to boot from it, but I can't get the disc out. I've tried restarting the computer while holding the mouse buttons, while using ctrl cmd F O, but nothing seems to work. What could have possibly happened? I was using an uncopied windows xp install disc and it just crashed my computer.