Windows Server 2003 (Small Business), all current patches applied
Server is domain controller for small business network.
Recent tornado and high wind events caused sudden power failure on the server. When restarted, the server would hang at "applying computer settings". Experts-Exchange information (from existing "server hangs... computer settings") told us to start the server in safe mode, disable all MS Exchange services, etc. This enabled us to start the server quickly. (EE suggestions to disable APC PowerChute did not apply, PowerChute is not installed on this server.)
Now that the server is up and running, we can not manually start MS Exchange services. Further investigation shows that Active Directory Users and Computers only shows saved queries, and we are not connected to the domain. Attempting to connect to the domain prod.local produces the Active Directory error "Windows cannot connect to the new domain because: The logon attempt failed".
Event log errors indicated data corruption on drive C:, running chkdsk on drives C: and D: fixed indexes, recovered orphan files, etc. A second chkdsk pass showed no errors.
Everything appears to be working well, except for Active Directory. This server is the only domain controller. How do we get AD working again?