I got this new computer, which recently belonged to someone else. I logged into the main account (with the password) and used admin permission to delete it. This is so I could start my own administrator account. I meant to switch users, but I accidentally logged out. It replaced the main account with an account named "Administrator", but the password won't work for it.... HELP?!
I don't really think there is much information you need. I am using XP Home Edition though, I'm quite sure.