I should be the only one able to make changes.
No, you are not. There is also Windows Update ;) Filetype wdf = Windows Driver Foundation
BTW my Avast icon is not spinning and nothing happens when I right or left click it and the same with the secure line.
It only spins if avast is scanning something, unless you have the animation disabled. Left click should open avast, right click should bring up a (small) menu. If really nothing happens, I suggest to perform a repair of avast and see if it changes things. If not perform a clean installation of the latest avast version.