Windows 10: Black screen with white dash in upper left corner

Discus and support Black screen with white dash in upper left corner in Windows 10 Gaming to solve the problem; PC boots up to a black screen with a white dash in upper left corner. It doesn't blink, there's no bios that pops up, no logo or loading animation like... Discussion in 'Windows 10 Gaming' started by Capatina Mihai, Feb 1, 2025.

  1. CAPATINA MIHAI
    Capatina Mihai Win User

    Black screen with white dash in upper left corner


    PC boots up to a black screen with a white dash in upper left corner. It doesn't blink, there's no bios that pops up, no logo or loading animation like the windows circle. Also the psu makes a click noise 11 times only when the PC starts up, it then continues on normally. This started happening overnight. The computer is barley 2 years old. I've tried to use a USB with Windows installer but it doesn't do anything. I've unplugged everything, turned off the power, waited for it to regulate or something. I've also removed the battery and put it back to reset cmos but when it turned on the psu cli

    :)
     
    Capatina Mihai, Feb 1, 2025
    #1
  2. JANICESTONER
    JaniceStoner Win User

    My windows 10 black screen, white line i upper left corner this morning. What do I do?

    My windows 10 black screen, white line i upper left corner this morning. What do I do?
     
    JaniceStoner, Feb 1, 2025
    #2
  3. GAIL RIGNEY
    Gail Rigney Win User
    white screen with a small green icon in the upper left corner on Windows 10

    new dell 2in1 running windows 10 - why do I have a white screen with a small green icon in the upper left corner? clicking on the icon does nothing

    Original title: white screen
     
    Gail Rigney, Feb 1, 2025
    #3
  4. DONALDSCHIAVO
    DonaldSchiavo Win User

    Black screen with white dash in upper left corner

    Flashing black box in upper left corner

    Immediately after upgrading to Windows 10 I have experienced the appearance of a flashing black box in the upper left corner of the screen. It seems to appear about once to several times a minute and is extremely annoying to the point I 'm considering
    going back to Windows 8.1. It flashes on and off quickly. The Microsoft representative told me to be patient and he assured me there will be an update soon to correct these bugs. Has anyone else experienced this momentary flashing black box in the upper left
    corner which appears regardless of what I'm doing? Also can't enable screen saver since Windows 10 download?
     
    DonaldSchiavo, Feb 1, 2025
    #4
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Black screen with white dash in upper left corner

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