RE: Optiplex 9010 AIO Screen goes black and freezes on logout.
We are experiencing the same issue. We have over 500 Optiplex 9020 AIO i7 and we have over 10 PC's that if a user walks away and it locks or locks on its own after time, it will freeze and user cannot use their keyboard or mouse. They have to reboot manually, that is the only fix.
I have tried all drivers including BIOS A14, chipset and all, nothing seems to fix. I am afraid it might be a motherboard issue. Still nothing from Dell on this?? Wow!