9 Replies Latest reply on Jul 31, 2017 12:34 PM by Intel Corporation

    Intel HD 520 black screen and flashing on Windows 7

    bobdvb

      I have a Windows 7 Enterprise Dell Latitude E7270 with up-to-date drivers (Intel 21.20.16.4627) and up-to-date BIOS from the vendor.

       

      I am connected with a LG 27in 4k monitor via DisplayPort on the dock using Extended desktop and the laptop's display is the secondary display.

       

      Occasionally the graphics gets very upset and flashes to black, sometimes worse than others, today the machine is unusable. I have found it becomes more stable when I use 30Hz instead of 60Hz.

       

      I have seen suggestions about Disabling the sync in the power menu and that might have had some effect but not today. I have seen comments about this being seen on Windows 10 as well.