DavidR
5
I would try an avast! repair Add remove programs > select avast Anti-virus > click on Change/Remove (available in winXP, you didn’t say which OS is being used), from here select repair (you need to be connected to the internet).
If that doesn’t work use add remove to remove avast and use RejZor’s avast! External Control program to remove any remnants of avast (Perform Forced Uninstall) and re-install.