Hi,
is your PC infected with a (specific) "virus", that's not in the CLEANER's list ?
Then please work through the link "VirusRemoval" below in my signature, and come back with specific info, e.g. Virusname & location/Folder/Filename
if not:
- only a very few "viruses" can be cleaned/repaired,
- other "infected" files like trojans/worms have to be deleted or,
- if it's a destructive malware that damaged/deleted vital system files: restore them from backup, e.g. your own backup or avast's VRDB
Morale: Secure your system, so you don't get (active) viruses/malware on your PC
Details: also in the mentioned "VirusRemoval"-link and in links in there
and basically all over the board here