First, I confess, I am a novice here.
I have tried a number of different approaches to clean a virus from my computer including AVG Free and now Avast Free; neither have been successful. My next step is to try Bitdefender.
The problem comes up when I use Internet Explorer (most often when I have multiple sessions of IE open). Within a few seconds I get an error indicating that Windows Explorer is not working. It takes several attempts to cancel and sometimes it will close all IE operations.
I have tried a full system scan with Avast in addition to its regularly scheduled daily scans. Any help will definitely be appreciated otherwise it's off to the computer repair shop.