Rummaged out my old laptop and tried to reboot it, but it is connected to a server, I had to enter my password and it said: There are currently no login servers available to process the login request.
How can I remove this domain?
You need administrative access first.
If you don't have one, you can create one with the help of a Hirens Boot CD. There are enough instructions for this.
If you then have a local administrator, you go to the system properties (Either open Explorer and right-click on "This PC" or on the keyboard "Press Windows key and pause key at the same time). Then go to" Advanced system settings "then in the tab" Computer name "and then the last point on Change and then add the computer to a local WORKGROUP. The computer is no longer part of a domain.
