My school was giving away old broken Dell Optiplex 745s away, so after working on it for a few days, I got it to work. But when I turned it on, it was still connected to the schools domain. So when I tried to change the password, there was no password to change. I've tried many things, but to no avail.
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It seems strange that a school would give away any system without first wiping the drive.
You need to log in to an administrator account to dis-join from the domain. If a local account exists, you can log in locally with the username .\[username] or [hostname]\[username]. If you don't have access to the local username & password, you can use a linux boot drive with ntpasswd to view and reset these. http://pogostick.net/~pnh/ntpasswd/
After logging in to an admin in windows, dis-join by going to computer properties, Change Settings by doing the following:
Step 1. Click Start button, then point to Computer.
Step 2. Right-Click Computer, then click Properties.
Step 3. Under the Computer name, domain, and workgroup settings, click Change Settings.
Step 4. Then hit Change, change the Member of Option to Workgroup, hit OK.
Step 5. You will be prompted the administrator’s account, type it.
Step 6. Then restart your computer.
Yanzzee
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