Everything went fine (full scan, showed results, removed items) until it was finished and went to reboot. Now the computer is stuck on a black screen and nothing happens. I've rebooted it again and the Dell.com sign appears (where I have the option of pressing F2 or F12), then the screen goes blank. Help?
This is a Dell Dimension E510 with Windows XP. Yes, I'm a computer novice. Be nice.

Angela