system
2
Swinny,
Do you have your computer set to download Windows updates automatically?
Sometimes a patch or update from Windows can cause this to happen.
Make sure that Windows is updated with all the critical patches in place.
Run a repair of Avast by using Start/Control Panel/Add-Remove and clicking on Avast.
Look for the Option to repair. Click on it and let Avast run a repair. You must be connected to the net so Avast can look for and download any files that it sees it needs.
This is the only thing I see that you have not done.
Good luck.