Not working Shields

Booted this Morning only to find Web,Script,Behavior and Mail Shields not working.
Any suggestion please
Thanks.

controlpanel > ad remove programs > avast > uninstall > repair option > wait a couple of minutes and reboot

did it work?

Thanks for your suggestion.
I had already tried but tried again with delay as suggested.
Regret shields still not working.
Regards

any other security program installed?

try full reinstall http://www.avast.com/uninstall-utility

I have Malwarebytes Pro installed.
I will try your suggestion.
Thanks

Have done a clean install.
All shields now working except Script.
Regards