It is telling you that you don't have an antivirus application installed. Since you are at the Avast Antivirus forum, have you downloaded Avast, and if so are you planning on installing it?
Sorry I see on your desktop that you do have a shortcut to Avast. Someone who knows more about these things may be able to help.
Have you checked Avast to see if it is running. If it is there must be something wrong with the HP Total Care advisor.
RoRo