What is causing Event ID: 6004 ?
Event log shows:
Event Type: Error
Event Source: EventLog
Event Category: None
Event ID: 6004
Time: 12:05:53 PM
A driver packet received from the I/O subsystem was invalid. The data is the packet.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp
This problem is fixed in Symantec Endpoint Protection 11 Maintenance Release 4. For information on how to obtain the latest build of Symantec Endpoint Protection, read Obtaining an upgrade or update for Symantec Endpoint Protection 11.x or Symantec Network Access Control 11.x.