Boot safe mode and use the administrator to change the password.
No go? Look up NTPASSWD on google.com. Free, changes the password too. Too hard to use? Look up http://www.lostpassword.com
Hi Ummm.. I have a problem with Windows XP. Every time I login to Windows this login window pops up which never happened before and it asks me for my password even though I never put on a password on the system and now I cant go on....WHAT DO I DO!!!!!!!!!