Avast Driver Updater

Hi. Downloaded the new Driver Updater last week and since then none of my games will go to full screen (Alt+enter). Have uninstalled the new updater and then reinstalled but nothing happens. Can someone advise please on next course of action. Thank you.

Since you don’t mention anything about using it to do updates, it’s hard to answer.
Roll back your video driver update and see if that helps.