Active Directory Cert Services Will Not Start

I am unable to renew certs in my domain.  My CA ADCS will not start, error from event log "Active Directory Certificate Services did not start: Could not load or verify the current CA certificate.  CA-Mercury Keyset does not exist 0x80090016 (-2146893802)." and "The Active Directory Certificate Services service terminated with service-specific error %%-2146893802."

I am thinking of following http://phreek.org/blog/2011/10/windows-2008-ca---keyset-does-not-exist-0x80090016--2146893802 for a fix.

Jason