This is a discussion on Login Problem within the Windows XP Support forums, part of the Tech Support Forum category. electricity went and when it came back windows came up with a login screen and the user name was administrator
Did you try typing in your normal User Name, and Password if you had any? (If you did NOT have a password, leave blank)
If you do get to your desktop, make sure to set the correct options in Control Panel, User Accounts. If you did NOT have to logon before, you had a fixed password or no password, and had Use Welcome Screen enabled.