Try SAFE MODE and log in as the administrator then change the password. (how to use safe mode? Please google that.)
If there is a password on the admin account you can reset it for free with NTPASSWD (google that.)
If NTPASSWD is too hard to use, buy a reset disk at http://www.lostpassword.com
I inherited a dell laptop from a relative. I'm on a Windows XP system. When I boot the computer, it lists the previous owner's username and asks for her password. The previous owner doesn't remember the password that she used, so I can't bypass this log-in window.
How can I bypass this log-in window and remove all references (administrator, username, password, etc.) to the previous owner from the computer system?