I had a workstation configured on our company's domain. I wanted to change the computer's name and, as I understand it, had to first remove it from the domain which I did. When I re-booted, it wants me to log in but the Administrator account is disabled and I'm unable to determine what username and password to use in order to log into the Windows 7 workstation to re-configure it on the domain. I have no idea how I can log in in order to configure it on the domain. I can't get beyond the login screen. Any ideas?