Lost user account and password to laptop

[kaphc]

First day back after the holidays and I have done a very stupid thing!

 

I have a teacher's laptop, which was set to log onto the old domain at our old school site. Over the holidays we moved and are now on a new site with a new domain (but which has the same name as the old domain).

 

So to take the laptop out of the old domain, I set it to be part of a workgroup instead. Rebooted the laptop just at the moment when I realised I had no idea what the administrator password was. Now I can't log into the laptop at all with any combination of password / user account that we previously had. I've tried booting to a DOS prompt in safe mode, but still get asked to log onto Windows first.

 

Any thoughts to rescue me from my pit of stupidity?

[Dom_]

Offline Windows Password & Registry Editor

[kaphc]

Oh that looks useful. Will check it out from home tonight and see what I can fix!

[kaphc]

Had to get some more CD-RWs to burn this onto but ran it through tonight and have cleared the Administrator password. Now I can get in again fine and sort out my mess. Thanks!

[mac_shinobi]

I normally use trinity rescue kit :

 

http://trinityhome.org/Home/index.php?content=TRINITY_RESCUE_KIT____CPR_FOR_YOUR_COMPUTER&front_id=12&lang=en&locale=en

 

That or orphcrack :

 

Ophcrack