Background: I had two hard drives in a 3-disk array go bad. Importing the foreign configuration didn't help so I replaced the two drives, blew away the virtual disk, recreated the disk and attempted restore. I was having issues with getting the OS to restore from backup and decided I would have to reinstall the OS (windows server 2003 standard) and then restore the data. In active directory users and computers, domain controllers, on another DC, I deleted the domain controller in question since I was unable to demote. After doing that, I decided to give the OS restore one more try and it completed successfully. I will call this DC1, and I have multiple other DC's on my domain.
NOW: My problem is that DC1 is no longer recognized in my domain as a DC because I deleted it. I can't demote it because it says no DC can be contacted to perform the demotion. It appears that DC1 is not communicating with the other DC's. I am unable to remove it from the domain to a workgroup because it is a DC, and I can't demote the DC. I did try changing the name and restarting, thinking that my force info into the domain and then I could demote. No good. Still can't demote. No connection between sites in sites and services due to a possible DNS lookup error. The IP address of DC1 has changed because I brought it from another subnet.
This has now stumped me and I need some help. Thanks.