Yeah, daiz, if you don't have the 'a' blue icon on the bottom right of my screen near the clock there is a possibility that the residents are not working...
Can you try to repair your installation?
Go to Control Panel > Add/Remove programs > avast! antivirus > Remove
Then choose Repair function in the popup window (Repair).
If this does not help, can you uninstall / boot / install / boot again?