pdc changed its name on a reboot losts its sid how do I get it back

I migrated to 2008r2 server and all went well except after a reboot it changed the server name to old pdc and now the server thinks it has 2 names. I think it lost its sid? Have no idea how to get it back. What else would explain when I change the ip address it changes it in dns and wins for both names. My domain is down because of this. Need urgent help. How many points can i give to get this fixed asap. OR if someone could tell me how to restore my old pdc that has already been demoted
jtanoAsked:
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John Gates, CISSPConnect With a Mentor Security ProfessionalCommented:
On your domain controllers I would suggest doing (From a command prompt)

dcdiag /v > dcdiag.txt

netdiag /v > netdiag.txt

Do this from each dc and please post the results (masking any ip addresses) so that we can get a full picture of what is going on.

-D-
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dkumar82Commented:
Provide More information:

1. What is the domain  Model - Windows 2003 / Windows 2008 /NT
2. What do you mean by OLD PDC - are you refering NT Domain
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jtanoConnect With a Mentor Author Commented:
It was srv 2003 transitioing to a new srv 200832. It was woking until I rebootet it a 2nd time, then the name changed and netlogon won't start. It seems to have 2 names and I can't get rid od either one.
 
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dkumar82Connect With a Mentor Commented:
also Ipconfig /all result

Make sure Same IP address givin to DNS address
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jtanoAuthor Commented:
I needed to have it fixed by today, so I just virtualized a backup of the old server and I will have to redo the new server and try again.  Thanks for the efforts,
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