Windows 10: laptop display stopped working after plugging external monitor into HDMI port

Discus and support laptop display stopped working after plugging external monitor into HDMI port in Windows 10 Drivers and Hardware to solve the problem; This has now happened to me many times even after completely re-installing windows 10 from scratch. But this time around it seems permanent. I've also... Discussion in 'Windows 10 Drivers and Hardware' started by RizPanjwani, May 18, 2020.

  1. laptop display stopped working after plugging external monitor into HDMI port


    This has now happened to me many times even after completely re-installing windows 10 from scratch. But this time around it seems permanent. I've also tried uninstalling display drivers and monitors. Under Device Manager, monitors now I only see the Generic PnP monitor. When restarting the computer, it makes some weird beeping sounds like old school video games, and the screen remains blank. In order to see anything, I have to connect to the external monitor.

    :)
     
    RizPanjwani, May 18, 2020
    #1
  2. Gman_640 Win User

    'No signal' on external monitor when connected to laptop via HDMI

    'No signal' on external monitor when connected to laptop via HDMI

     
    Gman_640, May 18, 2020
    #2
  3. 944382 Win User
    Laptop display and monitor will not wake when HDMI cable plugged into laptop.

    I have a laptop. Lenovo ideapad FLEX 4-1480 Signature Edition.

    The laptop has a display, and the laptop is connected to a monitor via an HDMI cable.

    Sleep mode is disabled.

    Screen timeout is enabled.

    I lock the computer. The laptop display and monitor both eventually deactivate.

    I move the mouse and press keys to wake the monitor. Nothing happens on either the laptop display or the monitor.

    If the HDMI cable is not plugged into the laptop, the laptop display will wake as intended. The problem happens only when the HDMI cable is plugged into the laptop.

    I have to remove the HDMI cable from the laptop, wait a few seconds, reinsert it, then the laptop display and monitor will wake. Again, the laptop display will wake just fine when the HDMI cable is not plugged in.
     
    944382, May 18, 2020
    #3
  4. laptop display stopped working after plugging external monitor into HDMI port

    HDMI Port Stopped Working

    I generally use a second monitor via an HDMI cable while working. However, it stopped working today.

    I checked these:

    • Windows cannot detect a second monitor when HDMI cable is connected to the second monitor.
    • HDMI cable which I use works if another device is connected to the second monitor.
    • My computer detects my HDMI-to-VGA converter through HDMI port.

    My computer runs Windows 10 Home with latest updates installed.

    I suspect this is due to a driver error. How can I fix this problem?
     
    yildizabdullah, May 18, 2020
    #4
Thema:

laptop display stopped working after plugging external monitor into HDMI port

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