1. Once you set avast as your screen saver I believe you can pretty much choose other screen savers (image1), I don’t use it, but there is Windows XP (my OS) that is pretty much black (image2), obviously you don’t have XP. You can choose My Picture Slideshow, which you would have had to have pre-set a folder in the standard screensaver setup (image3).

Now all you need do is select the folder to use and populate it with a black image, etc. it is just being a bit creative if you just want black.

  1. As its name suggests once the scan completes it will restart the scan.

  2. The avastUI, Settings, Exclusions are for all on-demand scans and that would include the screensaver scan.

The resident scanners are not included in this global setting.