boot stops at System32\Drivers\aswRvrt.sys

Running Win7 Home, Windows Update regularly, Malwarebytes Anti-Malware run weekly, AVS updated daily, any help would be appreciated.

-Booting in to Safe Mode= Freezes at …System32\Drivers\aswRvrt.sys
-Starting Windows Normally= After windows logo, display goes black, then grey, remains grey
-Launching Windows Repair= After perf repair, same results as Normal start up

See: “If you cannot Boot the computer”
Instructions: http://forum.avast.com/index.php?topic=53253.0