Soleron on 20 June 2009
http://home.eunet.no/~pnordahl/ntpasswd/
This. Download and burn to a disk, boot from it and follow the instructions to reset account passwords. Exploits the fact that Linux-based OSs don't respect Windows protections.
If it doesn't work, reformatting is the only real option. If you can't get at your data in Windows to save it before reformatting I suggest using a Linux LiveCD.
