I have been trying to track down a problem whereby the I7 computer unexpectedly reboots without warning. I have been through a variety of investigations: bios, drivers, fresh installs, hardware substitutions, turning off power control settings. etc. etc.
I have noticed in the event viewer logs the following FilterManager, Event ID 6 entries starting approx 5-6 seconds before EVERY critical shutdown log entry:
File System Filter 'SymEFA' (6.0, 2009-08-27T21:27:03.000000000Z) has successfully loaded and registered with Filter Manager.
File System Filter 'FileInfo' (6.1, 2009-07-13T18:34:25.000000000Z) has successfully loaded and registered with Filter Manager.
File System Filter 'eeCtrl' (6.0, 2009-08-17T18:05:31.000000000Z) has successfully loaded and registered with Filter Manager.
SOMETIMES
File System Filter 'BHDrvx64' (6.1, 2009-09-11T03:06:53.000000000Z) has successfully loaded and registered with Filter Manager.
These show right before the following message:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly. (Event ID 41, Kernel-Power).