My exchange server and AD crashed last time it happened error was with system attendant then I rebooted both the servers and it started good. This time again it has crashed. Hard drive is Ok and RAM is ok however the system is not starting. What should I do I have symantec backup of ntds.dit. Should I restore it. What is the first task I do. Today is off and have to make the system up and running. Atleast for letting employees to work temporarily, since restoring backup shall take time. It is on 2008 R2 Windows and Exchange 2010. We have vmware esx server.