If the DC is failed and never comming back up again, you have manually remove if from Active Directory.
Use this guide (Just the same as MS KB, but a bit easier to understand).
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I have never ceased to be amazed how many problems you can encounter on a fresh install of a Windows operating system. This is certainly case in point&
Unable to complete ANY MSI installation. This means Windows Updates are failing and I can't …
This may not be a text book method to resolve VSS backup issues but it seemed to have worked on few of the Windows 2003 servers we had issues while performing a Volume Shadow Copy backup. If you have issues while performing a shadow copy backup usin…