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Failed 2012 Domain controller promotion

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Last Modified: 2014-09-01
I demoted a 2003 DC and replaced it with 2012 DC with the same name and IP Address. Something appears to have gone wrong. These are the problems I have found:

1. Computer is not in site and services
2. it is in ADUC, but not showing the site or that it is a GC
3. On the machine itself it is still asking to be promoted, but when you try to promote it I get the following error:

Error determining whether the target server is already a domain controller: the domain controller promotion completed, but the server is not advertising as a domain controller.

4. DCDIAG shows multiple errors

I think I need to reinstall this dc. What is the best process?
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