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Possible Duplicate:
What can I do if I forgot my Windows password?
I've got a computer that's stuck on the main screen asking me for the administrator password.
I think that there is software that can help you recover or change passwords on an XP machine.
Does anyone know or can recommend one?
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Try the Offline NT Password & Registry Editor. You can burn it to a CD, boot from it, and change the password from there.
Nathaniel
Posted 2009-12-07T02:12:20.547
Reputation: 3 966
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our partner HTG has a relevant article:
Reset Your Forgotten Password the Easy Way Using the Ultimate Boot CD for Windows
http://www.howtogeek.com/howto/windows-vista/reset-your-forgotten-password-the-easy-way-using-the-ultimate-boot-cd-for-windows/
Same basic approach, burn a bootable CD that allows resetting the admin password.
Jeff Atwood
Posted 2009-12-07T02:12:20.547
Reputation: 22 108
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I recommend OphCrack.
churnd
Posted 2009-12-07T02:12:20.547
Reputation: 4 228
Which uses rainbow tables (as I remember.. whatever those are) to try to guess the password. – Nathaniel – 2009-12-07T20:43:33.710
This seems to work well enough. It's been a long time since I've done anything like this, so I downloaded the ISO image and ran it against a VM of XPsp3. I first tried resetting the Administrator password to something new, but that failed to work for some reason. However, for my second attempt, I chose the "clear password" option and that worked like a charm. Nice utility. – Geoff Fritz – 2009-12-07T02:42:33.547