I got this error on Windows 2008 64b, after some automatic updates.
Event Log service is unavailable. Verify that the service is running
Try to start the Windows Event Log service, you may get this error
Windows could not start the Windows Event Log service on Local Computer.
Error 2: The system cannot find the file specified.
To fix this: run regedit.exe and goto to the entry
There should be an empty Parameters, just rename it to _Parameters.
The service should start now.