My customers computers keep going into a black screen every Monday when they come in to work. It seems to go black over the weekend. We suspect some time late Saturday Night or Sunday morning. This is happening with both OptiPlex desktops and Laptops.  All computers are Windows 11 Pro.  For some reason only 2 or 3 computers remain unaffected. We checked the Bios firware and updated them all but that has not fixed the issue. This problem seems to have come out of nowhere as we were find one day and then started having this issue. 

Thank you.