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Windows does not detect second display after windows update.

Anonymous
2023-04-26T20:26:48+00:00

All drivers are freshly installed and up to date. Graphics card is barely a year old and all cables also checked. The monitor thats not detected does work also.

Everything worked until 2days ago when windows updated and now windows does not detect the second display.

Please help thank you.

Windows for home | Windows 10 | Devices and drivers

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  1. Anonymous
    2023-04-26T21:02:02+00:00

    Hello ScrP, welcome to the Microsoft community, I'll be happy to help you today;

    I understand that after an update the second monitor is not detected;

    What exactly is the model and manufacturer of your graphics card?

    Are you using an HDMI cable to connect the second monitor?

    Are you using a laptop or desktop?

    Before answering the question, I suggest you try to force the detection of the second monitor;

    Press Windows key + i and go to System;

    Click Display;

    Scroll down to Multiple screens, click Detect;

    Then press the keys together: Windows key + P and select the Extend option;

    Verify that the second monitor is detected;

    See you soon!

    400+ people found this answer helpful.
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  1. Anonymous
    2024-06-15T05:57:17+00:00

    I came here looking for a solution and couldn't find one.

    I have an HDMI↔HDMI cable, identical on both ends. I simply switched the ends. Note that for a couple of years now, it has worked just fine the way it was... until I updated Windows the other day. Literally just turned the thing around.

    I feel like mentioning that there is, in my experience, 100% consistency in the Microsoft-approved method *not* working. "Click on detect". Y'think? Can't speak for anyone else, but the reason I'm here is that that stuff doesn't work. Maybe I'm just frustrated.

    10 people found this answer helpful.
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  2. Anonymous
    2023-12-29T03:27:56+00:00

    Thank you SO much! I've tried everything and this is the only thing to work for me!!

    10 people found this answer helpful.
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  3. Anonymous
    2024-04-30T13:30:46+00:00

    This seems to be an effective resolution to bring the monitors back to life, but it doesn't address the cause of the issue.

    1. Unplug the problematic monitor from the PC and power
    2. Launch an admin PowerShell session, then run the script below.

    # Remove registry keys$keysToDelete = @("Configuration", "Connectivity", "ScaleFactors") foreach ($key in $keysToDelete) {    $keyPath = "HKLM:\SYSTEM\CurrentControlSet\Control\GraphicsDrivers$key"    Remove-Item -Path $keyPath -Recurse -Verbose
    }

    1. Restart the PC.
    2. Log in and let the PC complete its inital start processes.
    3. Reconnect the monitor to power, then video. (order probably doesn't matter)

    If it worked - You should now be able to see all the connected monitors in Display Settings.

    On a couple occasions I had to complete this process twice before the monitors started to function as expected again.

    Good luck!

    9 people found this answer helpful.
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  4. Anonymous
    2024-03-11T03:19:56+00:00

    we are on the same boat here, Feb 24 update killed my second monitor. i have tried everything.

    May laptop is thinkpad with intel620 graphic card.

    Would you Microsoft relaease the patch or something? i can work from my monitor since feb.

    please do something microsoft.

    8 people found this answer helpful.
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