This video will show you how to regain access to your computer when you have forgotten your windows login password.
You will need to download a bootable image file called Offline NT Password & Registry Editor from http://pogostick.net/~pnh/ntpasswd/
Then follow the instructions in the video
Hopefully in a sticky situation this video might enlighten you :)
Watch and let me know where I need to improve.
Best Regards,
247Techie