Repair Windows Server 2008 R2

I have an AD . That does not work perfectly because the problem of this the cmd is not open, and some applications don't open perfectly. I don't want to restore it, just I want to repair because it contains more valuable software. What are the procedures ?
MD. SHAMIM REZASystems EngineerAsked:
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SAM ITAD windows Admin  Commented:
update the latest patchs in windows server and reboot the server and check
John TsioumprisSoftware & Systems EngineerCommented:
First you need to take a full backup ...a complete Bare Metal Image so if anything goes wrong you can revert it to its semi-workable state.
Then we need some more info regarding the errors you get...look at your Event Viewe about Errors and report back...
DC is not a good idea to "host" applications....i suggest that you build a machine probably VM and try to "migrate" the applications to it as a Disaster Recovery precaution
Rajul RajInformation Security OfficerCommented:
Repair it with Windows server media
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Tahir QureshiSystem AnalystCommented:
Run SFC /scannow    

to see whether it fix the issue or not
Frank McCourryV.P. Holland Computers, Inc.Commented:
Is there a secondary AD controller?  If not build one!  If you have two AD controllers, you can simply transfer the FSMO roles and demote this server, then format and reload.  Once reloaded, transfer back the FSMO roles you want on this server and leave the secondary AD controller in place.  ALWAYS have a backup AD controller as well as a backup of your AD controllers.

If you need help transfering the roles, see this article:

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aravind ancheWindows/Vmware Commented:
First take the backup and then

Boot from OS install disk
Select next after making sure the language options are correct.
Select Repair option
Select CMD
CD into recovery
Type Dir
Run the StartRep.exe command in the list.

That should do a basic repair to the OS.

Found that in a thread on Technet.
Frank McCourryV.P. Holland Computers, Inc.Commented:
Excellent solutions suggested.  No further comments or questions from OP.
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Windows Server 2008

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