I was trying to fix a computer for a friend. His bios had a password on it and he didn't know it so I took the internal battery out and reset it WOW what a mistake......Well I got the password off, installed windows xp but now theirs a whole new problem the computer will start up and shut down but WILL NOT RESTART at all!!! If I try to restarting it just keeps beeping over and over again Black screen and everything....Whats wrong with it PLEASE HELP!!!!!!!!!!!!!!!!!!!