I kept getting blue screen crashes - ‘your computer has detected a threat, etc’ so I did a full ‘CC Cleaner’ delete, then a full Malwarebytes scan, followed by a full Safe Mode Avast scan. Avast found 1 file it didn’t like ‘Driver Detective’ which was adware. I deleted that file. Then Avast asked me if I wanted to run a Boot Scan for safety’s sake ‘yes’ or ‘no’? so I hit ‘yes’ and the pc resarted, but no Boot Scan followed.
Sounds like you have other issues.
May be a good Idea to follow the steps outlined at: http://forum.avast.com/index.php?topic=53253.0
Attach the requested logs and a Malware expert will help you resolve your problem.
Thanks, I do a full virus scan in Safe Mode whenever I suspect a problem, follwed by a full Malwarebytes. I do a CC Cleaner and ADW Cleaner set to delete, all those together seem to flush out anything suspect.