Too Many Problems

i need some serious help. i am currently unable to turn my computer off. everytime i try to turn it off nothing happens, not even restarting will help. i also have something in add or remove programs that will not come out. can someone please advise me on the correct procedures to take care of these matters.

Hi, Frustratedin2005 How about a bit more input: Are you running XP Pro, or XP Home edition? Do you have the installation CD? Do you know how to use the "CHKDSK' utility?…Please, get back to me and I'll see if I can give you a hand.