From which Event-Source ?
There's not only one Event-ID 100
Event-ID 100 / Source : MSFTPSVC
-> "The Users group does NOT have the logon locally user right on the domain controller."
Event-ID 100 / Source : ESENT
-> "wuauclt (3224) The database engine 5.01.2600.0000 started."
Event-ID 100 / Source : W3SVC
-> "The server was unable to logon the Windows NT account xxxx"
Event-ID 100 / Source : NAV
-> "Error sending alert to NAV Alert server xxxx"
and so on ....
I have found NOTHING about an 313 Event-ID ? o_O
are you really sure ?