Endless built-in screen power cycling loop when connecting monitor


  1. aiwass
    Posts : 1
    Windows 10 64-bit
       New #1

    Endless built-in screen power cycling loop when connecting monitor


    I have an MSI GS60 laptop that has both HDMI and DisplayPort connectivity and have encountered this issue on two different monitors using multiple cables. Windows initially detects an external monitor, but once I choose that I want to display anything on it (extending, mirroring, etc.) the laptop's main screen powers on/off repeatedly as it usually does when changing display modes but the process never ends and no output is seen on the external monitor. Curiously, this happens only on HDMI on one of my monitors (displayport works), and only on displayport on my other monitor (HDMI works). Any ideas as to potential causes and solutions? All relevant drivers are up to date and I have tried using multiple cables/checking for secure connections.
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  3. TV2
    Posts : 2,221
    W10 Pro 22H2
       New #2

    First, with the configuration where both monitors are working, right click the desktop and choose Display Settings. See if there are just 2 monitors showing. If there are 3, see if you can remove the phantom one.

    Obvious, but must ask: are there any warnings indicated in Device Manager under Display Adapters?

    A couple suggestions:
    Download the most recent Display Driver for your PC. If available, use the Custom setting to set up the installation and then perform a Clean Installation (this will remove all previous drivers, settings, and display software before installing the new/same driver). Test.

    Also could just go into Device Manager and Uninstall the Display Adapter and restart, but the above method is much better.
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