Windows 10: Third screen not detected when trying to set up a second external monitor

Discus and support Third screen not detected when trying to set up a second external monitor in Windows 10 Drivers and Hardware to solve the problem; Hi, I have a Toshiba Dynabook, along with a Toshiba docking station that has both a hdmi and vga port. The monitor that I'm connecting using the hdmi... Discussion in 'Windows 10 Drivers and Hardware' started by KathyKelly4, Jul 6, 2020.

  1. Third screen not detected when trying to set up a second external monitor


    Hi,


    I have a Toshiba Dynabook, along with a Toshiba docking station that has both a hdmi and vga port. The monitor that I'm connecting using the hdmi seems to work whereas the monitor I'm connecting through vga isn't working. I have been able to get both monitors to separately work with the laptop but for some reasons I can't get them both to work.


    When in the Display settings I only see two screens and when selecting the Detect button the third screen can not be connected and on the monitor itself it says that there is no signal. I have checked that everything is plugged in correctly. Similarly, I've tried other fixes, including to disable and then enable the graphics card but this does not fix the issue. Can you suggest a potential fix for this issue?


    Thanks

    :)
     
    KathyKelly4, Jul 6, 2020
    #1

  2. Windows 10 is not detecting my second monitor after the upgrade.Monitor display is there on boot up, and is listed in device manager, but is not detected when setting up displays.

    Windows 10 is not detecting my second monitor after the upgrade. Radeon 4800 video card. Monitor display is there on boot up, and is listed in device manager, but is not detected when setting up displays.

    Changing the title

    Old title – Dual monitor issue.

    New title – Windows 10 is not detecting my second monitor after the upgrade. Radeon 4800 video card. Monitor display is there on boot up, and is listed in device manager, but is not detected when
    setting up displays.
     
    TaylorFeltner, Jul 6, 2020
    #2
  3. Night Light Setting and Third Monitor.

    Hi Reagan,

    We would like to ask you some questions in order assist you properly:

    • Did Night light work previously on all three monitors?
    • Have you made any recent changes to your PC?
    • Are you getting an error message on the third monitor regarding Night light?
    • Is the third monitor being detected by your PC?
    • What troubleshooting steps have you performed so far?

    While waiting for your response, we suggest that you try to connect your third monitor to what you are using on the 2 working monitors to see if it is only a loose connection issue.

    Regards.
     
    Rolando Vil, Jul 6, 2020
    #3
  4. Nikhar_K Win User

    Third screen not detected when trying to set up a second external monitor

    Extend Display to second and third monitors

    Hi Ian,



    Thank you for writing to Microsoft Community Forums.



    I appreciate the efforts taken by you in resolving the issue. I understand that you are unable to extend the display to second or third monitor. I’ll certainly assist you with the issue.



    However, it would be great if you can help us with the details requested below:



    • What happens when you try to extend the display?
    • Do you receive any error message/code?
    • Are you aware of any changes made to the computer recently?
    • Which build version of Windows 10 is installed on the computer? To check type:
      winver in the search bar on the Taskbar and hit
      Enter.
    • What is the make and model of the laptop?


    Ideally, to extend the display we can use the shortcut Windows logo key + P, and select
    Extend from the menu.



    I would suggest you to refer the troubleshooting steps mentioned in the article

    Troubleshoot external monitor connections in Windows 10
    and see if that helps.



    For additional information, see
    Set up dual monitors on Windows 10
    .



    Let us know the results.



    Regards,

    Nikhar Khare

    Microsoft Community - Moderator
     
    Nikhar_K, Jul 6, 2020
    #4
Thema:

Third screen not detected when trying to set up a second external monitor

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