Could not log in to Windows 2000 server

Security Accounts Manager initialization failed because of the

following error: Directory Service cannot start. Error

I could not log in to Windows 2000 server after the server lost the power. I got the following error message.

“Status:0xc00002e1. Please click OK to shutdown this system and reboot into Directory Services Restore Mode, check the event log for more detailed information.”

Does anyone has any ideas to resolve this issue?