I am using Windows Server 2003. My server instantly crashed with bluescreen when I turned it on. The screen refers to some registry file failure error. The error code is -- c0000218. The message says --- The registry cannot load the hive (file): \SystemRoot\System32\Config\Software or its log or alternate. It is corrupt, absent, or not writable.The system restarts and again the same error on screen. I tried to go in Safe Mode and recover AD. But yet nothing worked. The system use to work fine, and suddely this registry error appeared.