Windows 8 and 8.1 Forums


Windows 8 not detecting DisplayPort Monitor

  1. #1


    Posts : 4
    Windows 8.1

    Windows 8 not detecting DisplayPort Monitor


    So I've been using a monitor via DisplayPort through the past week with no issues. Suddenly today, I turn on my laptop and the port is no longer detecting any monitor at all. I'm willing to troubleshoot this using any links or advice provided, please help.

    I've tried restarting my computer, plugging the port in/out, plugging my monitor in/out... this problem seemed to have occurred out of seemingly nowhere. Any advice is appreciated, thank you.

      My System SpecsSystem Spec

  2. #2


    Posts : 4
    Windows 8.1


    Alright, figured it out.

    I'm guessing, that I probably set my external monitor to deactivate before unplugging it. The next time I plugged it in, it wouldn't activate at all for this reason.

    I solved this by switching the way it got input from my laptop, going from DisplayPort to HDMI. Then I reactivated the monitor, and was able to switch back to DisplayPort.

    In my personal opinion, this is truly the most idiotic thing I have dealt with so far in Windows 8. Hopefully display options such as "deactivate" don't stick around after unplugging them in the next iteration of Windows.

    - Garret


    EDIT:
    It happened again. Did some more research and the solution here worked:
    ASUS PB278Q 1440P MONITOR "DISPLAY-PORT: NO SIGNAL, AND HDMI: NO SIGNAL" GTX 780

    Relevant comment:
    There is a feature on newer motherboards in which they have sleep state settings outside the control of the operating system. Go into your bios and go to APM configuration. Look for ErP setting (default is usually disabled) and enable it to S4+S5 sleep state. This solved my problem, now my monitor will show a display after computer wakes up from sleep or when powered off.
    Last edited by GarretMP; 13 Feb 2015 at 11:55.
      My System SpecsSystem Spec

Windows 8 not detecting DisplayPort Monitor
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