A final question. Looking at the taskbar on the lower right, I used to see the little spinning Avast globe. It is not there. I selected to Customize and scrolled down to find Avast. It is set to show icon and notifications. As I played with the different options, a window popped up that said "This notification icon is not active. It will be shown the next time it becomes active."
Does this mean it is not in the startup menu any longer, or just not active, since you removed the previous threats?