Can not log in to Windows XP. Domain problem.

AbsoluteZero

So I'm at home from uni for the weekend and I was trying to send a large file to the PC at home here over LAN. So without thinking much about it I set both machines to the same workgroup.

Well in doing so I deselected the radio button that indicates my laptop belongs to a domain. Now I can't log into my laptop anymore, it won't take my password, and I can not select a domain to log in to.

How do I fix this?

blincoln

Log in with a local account? Even if you never explicitly set one up, there's still the local Administrator account. If you don't know the password, you can probably get it with the ophcrack boot CD.

AbsoluteZero

blincoln wrote:

Log in with a local account? Even if you never explicitly set one up, there's still the local Administrator account. If you don't know the password, you can probably get it with the ophcrack boot CD.

I don't know the username OR the password to the local administrator account... would ophcrack boot CD get it for me?

supabeast

Everything you need to know to fix your problem can be found here:

http://home.eunet.no/pnordahl/ntpasswd/

AbsoluteZero

supabeast wrote:

Everything you need to know to fix your problem can be found here:

http://home.eunet.no/pnordahl/ntpasswd/

That seems to change passwords and stuff... I'm a bit weary about that, I don't want to fuck anything else up. But if I could recover the local admin's username and password combination that would rock.

I'm downloading the ophcrack live-cd... bigass download though.

blincoln

It's big because it has pre-generated hash tables for every possible password using common characters up to 14 in length.

It will tell you the names of all the local user accounts, and if they use passwords of 14 characters or less it should reveal what they are.

If that doesn't work, then yeah you'll need to use the admin password reset utility.

AbsoluteZero

Is there a way I could change the workgroup/domain settings without logging in? A boot CD that could do it?

If I could change my computer back to the domain it belongs to and get it off the workgroup setting, I'm pretty sure I could log in no problem.

It's looking like my account IS the local admin account... Oh well, I'll try all the accounts I can get passwords for...

AbsoluteZero

None of the user/password combinations ophcrack produced worked.

It couldn't even find 4 of them.. not even the one for my account. No Administrator account was listed.

AbsoluteZero

supabeast wrote:

Everything you need to know to fix your problem can be found here:

http://home.eunet.no/pnordahl/ntpasswd/

I just ran this and discovered all the user accounts were locked... I unlocked mine without changing the password... annnd now my computer is running chkdsk for some reason.

I really hope I didn't fuck up my computer even more.

AbsoluteZero

Unlocking the account didn't work. I tried it again, and found the account was still locked.

*sigh*

This is looking more and more like I am going to have to reformat. What a pain in the ass...

blincoln

If neither ophcrack nor the password reset worked, I have to imagine there is something wrong with something you're doing. I've used them both a bunch of times.

Your local admin account can't be a domain account. It's not possible. Use the password reset utility to make the admin password blank and try logging on with that.

If that still doesn't work, can you describe exactly what you're typing into the username and password fields?

Also, I'm 99% sure you can't set up your machine as a domain member without actually being on the domain, and even if you could somehow trick your PC into thinking it was on the domain without being connected it almost certainly no longer has the cached version of the domain credentials to authenticate you with.

thej3w

You could always remove the password with EBCD or another app on this site. http://www.petri.co.il/forgot_administrator_password.htm You could even back up the password with EBCD, change it to a blank password, then when you go back restore it to the other password and act like you were locked out. Or after you reset the Admin password try a windows system recovery rollback thing and see if it can go back to an earlier time.