To remove a computer from an Active Directory domain, follow these steps:

1. Log in the computer as a local administrator.
2. Remove the domain membership.


3. Go to Control Panel and select System and Security > System.
4. Select Change Settings > Change.
5. Select the Computer Name tab.
6. Go to the Domain field and select Workgroup.
7. Type an appropriate workgroup name.
8. Click OK to complete the process.

After performing the steps, restart the computer for the changes to take effect.