No video in safe mode


  1. Posts : 13
    Windows 10 64bit version 1809 build 17763.379
       #1

    No video in safe mode


    When I try to restart my pc in safe mode everything goes as it should until after I press the number "4", then the screens go black for a second, then a trapezoidal Windows logo but with no rotating dots appears for about 20 seconds, then both screens go black again, and my main monitor, which is attached to the graphics card with a DVI connection, displays a box that says "NO SIGNAL" and then goes off, while the secondary monitor, which uses a VGA connector, displays only a box that says "unsupported resolution" but stays on. The drive indicator light continues blinking like the pc is doing something, but nothing else appears on the screens and I have to long press the power button to turn off the pc.

    This behavior started sometime last year after one of the Windows feature upgrades. I don't know which one, as I rarely use safe mode. It worked fine prior to that.

    The graphics card is quite old, so they aren't making new drivers.

    I tried doing an in-place upgrade to the same version of Windows, but it didn't fix the problem.

    From an administrator command line, "SFC /scannow" says there are no problems, and "DISM /Online /Cleanup-Image /RestoreHealth" reports "The restore operation completed successfully. The operation completed successfully..".

    System specs:
    Lenovo Ideacentre K23010016
    Intel Core 2 Quad Q8200 @ 2.33GHz
    AMD Radeon HD 5450 driver v 15.301.1901.0
    8.00GB Dual-Channel DDR2 @ 398MHz (6-6-6-18)
    Windows 10 Home 64bit version 1909 build 18363.720
      My Computer

  2. Berton's Avatar
    Posts : 10,533
    Win10 Pro Versions 2004 and 2009/20H2, Win10 Pro IP_Dev, Win10 Home 1909
       #2

    The problem with Safe Mode diagnostic is that by default many drivers for devices are not loaded thereby losing some settings. Sometimes unplugging devices other than the basic needs is necessary.
      My Computers


 

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