Bypass Windows XP Administrator Pswd

I have WinXP Pro @ home. I set up a login pswd which now does not work. Even if I boot up in safe mode it comes to the Windows login screen and
asks for the Administrator pswd. Leaving the pswd field blank won’t work and the pswd clue can’t help me to remember. I cannot survive without my laptop. Believe me I’ve tried every suggestion but I know there is a logical solution.