Format and reinstall Windows.
'Cracks' or copyright infringement - we do not permit the posting of information that will enable other people to use pirated software or to evade the copyright laws. Please do not post serial numbers or CD keys, or links to sites that contain file-sharing software or such information.
Any help getting past a password would be a "crack". You might have a legitamate use for the info but someone else could mis-use it.