Fix 1: Unplug the console for around 30 seconds and then plug it back. Fix2: Try Cleaning the cooler and vents. Fix3: Power Cycle your console. If it still does not work try contacting the support team.
Hello! The reason for this is a virus (zgachaaf)! Try to delete any apps/files you downloaded recently. Also try doing a Virus Scan: https://www.youtube.com/watch?v=U-gkBA3txGw