kpnut
asked on
Changed workgroup and now unable to use PC
Hi.
My laptop is on the work LAN and I have dabbled with creating a workgroup (WLAA) which I selected. (Thus taking it off the Domain that it was on).
I had to restart the computer for the changes to take effect, and now it doesn't recognise me when I try to login. That is the only change I made - so how do I reset the domain, if I can't get past the login screen?
Apologies for the lack of technical terminology - our Tech Support guy is off sick, and it's all fallen apart!
Thanks
My laptop is on the work LAN and I have dabbled with creating a workgroup (WLAA) which I selected. (Thus taking it off the Domain that it was on).
I had to restart the computer for the changes to take effect, and now it doesn't recognise me when I try to login. That is the only change I made - so how do I reset the domain, if I can't get past the login screen?
Apologies for the lack of technical terminology - our Tech Support guy is off sick, and it's all fallen apart!
Thanks
ASKER
Sam,
The options button is disabled and doesn't give me the option to rechoose the domain.
Have tried to logon as Administrator - all to no avail.
Any ideas?
Thanks
The options button is disabled and doesn't give me the option to rechoose the domain.
Have tried to logon as Administrator - all to no avail.
Any ideas?
Thanks
ASKER
Sam,
The options button is disabled and doesn't give me the option to rechoose the domain.
Have tried to logon as Administrator - all to no avail.
Any ideas?
Thanks
The options button is disabled and doesn't give me the option to rechoose the domain.
Have tried to logon as Administrator - all to no avail.
Any ideas?
Thanks
How adventurous are you?
Brute Force Method:
You could blank the local admin password with the following utility:
http://www.nttoolbox.com/public/tools/LinNT.zip
THIS _MAY_ HOSE YOUR DISK! (Very small chance, but out of the 40-50x's I have used it, I never lost a machine... Yet)
This would allow you back on the box as a local Administrator!
Finesse:
Have you tried your domain username/password?
Have you tried logging in as Guest?
What about hitting <F8> when the machine starts, and choose: "Safe Mode with Networking" & change the config to be on the domain?
Brute Force Method:
You could blank the local admin password with the following utility:
http://www.nttoolbox.com/public/tools/LinNT.zip
THIS _MAY_ HOSE YOUR DISK! (Very small chance, but out of the 40-50x's I have used it, I never lost a machine... Yet)
This would allow you back on the box as a local Administrator!
Finesse:
Have you tried your domain username/password?
Have you tried logging in as Guest?
What about hitting <F8> when the machine starts, and choose: "Safe Mode with Networking" & change the config to be on the domain?
ASKER CERTIFIED SOLUTION
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Not REALLY Aftershog, check this out!
http://www.petri.co.il/forgot_administrator_password.htm
Free Tools
There are Linux boot disks that have NT file system drivers and software that will read the registry and rewrite the password hashes for any account including the Administrators. This process requires physical access to the console and an available floppy drive but it works like a charm! I've done it myself several times with no glitch or problem whatsoever.
Offline NT Password & Registry Editor
at http://home.eunet.no/~pnordahl/ntpasswd
Update: It seems that the Offline NT Password & Registry Editor is now available as a bootable CD image. It also features new drivers and empty password capabilities. It was tested on NT 4.0, W2K and XP, but it is NOT compatible with Active Directory.
John the Ripper 1.6
John the Ripper is a fast password cracker, currently available for many flavors of Unix (11 are officially supported, not counting different architectures), DOS, Win32, BeOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. Besides several crypt(3) password hash types most commonly found on various Unix flavors, supported out of the box are Kerberos AFS and Windows NT/2000/XP LM hashes, plus several more with contributed patches.
at http://www.openwall.com/john
http://www.petri.co.il/forgot_administrator_password.htm
Free Tools
There are Linux boot disks that have NT file system drivers and software that will read the registry and rewrite the password hashes for any account including the Administrators. This process requires physical access to the console and an available floppy drive but it works like a charm! I've done it myself several times with no glitch or problem whatsoever.
Offline NT Password & Registry Editor
at http://home.eunet.no/~pnordahl/ntpasswd
Update: It seems that the Offline NT Password & Registry Editor is now available as a bootable CD image. It also features new drivers and empty password capabilities. It was tested on NT 4.0, W2K and XP, but it is NOT compatible with Active Directory.
John the Ripper 1.6
John the Ripper is a fast password cracker, currently available for many flavors of Unix (11 are officially supported, not counting different architectures), DOS, Win32, BeOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. Besides several crypt(3) password hash types most commonly found on various Unix flavors, supported out of the box are Kerberos AFS and Windows NT/2000/XP LM hashes, plus several more with contributed patches.
at http://www.openwall.com/john
Call you IT guy at home! Or try logging in with your domain name \ username and then put your password in
If the domain name was WORKDOMAIN and your username was JoeBob then try
WORKDOMAIN\JoeBob and type in your password.
If the domain name was WORKDOMAIN and your username was JoeBob then try
WORKDOMAIN\JoeBob and type in your password.
kpnut:
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I am assuming that you are using a win2k machine? Try logging in as Administrator. I have no ides what the password is, but try leaving it blank, or: password.
This will get you in as local administrator.
If you are just trying to get back on the corporate network, try clicking the down arrow for the workgroup/domain selection box at the login screen. You can probably still select the old domain name & get back in that way as well.
Sam