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    • Sydney Butler
    • Editor, Hardware And Cutting Edge Technology
    • Force Detect Displays. While automatic display detection usually works without a hitch, you can explicitly tell Windows to look for new attached displays.
    • Check That Everything Has Power. You should ensure that everything is connected to a power source and turned on. If the monitor or any in-between device, such as an active HDMI repeater, isn't getting power, then Windows won't detect the display.
    • Look for Misplaced Connections. Double-check that everything is plugged in where it's supposed to be. A common reason for this problem is plugging the monitor into the wrong display output.
    • Confirm the Display Is Set to the Right Input. Most modern computer monitors and virtually all TVs have multiple inputs. If you've got your PC plugged into HDMI 1, but the monitor is set to HDMI 2, for example, then you won't see anything on-screen.
  2. Apr 24, 2024 · On Windows 10 and 11, you can use these steps to detect a second monitor on your laptop or desktop when the system is unable to find it automatically.

    • Why does my laptop not detect a second external display?1
    • Why does my laptop not detect a second external display?2
    • Why does my laptop not detect a second external display?3
    • Why does my laptop not detect a second external display?4
    • Why does my laptop not detect a second external display?5
  3. Aug 15, 2024 · Detect your Windows 11 second monitor. Open Settings and select System > Display > Multiple displays. Select either Detect to scan for a second monitor connected by cable or Connect if your second monitor is using a wireless connection.

    • Brad Stephenson
  4. If you’re not seeing what you expect on the external monitor, start with basic hardware troubleshooting: Disconnect all accessories from your PC. Connected docks, dongles, adapters and other hardware can cause conflicts.

  5. Jun 10, 2022 · Second monitor not detected? Here's how to fix it. Check that your monitor is powered on; Ensure your monitor and PC are connected; If you're using a graphics card, check you're...

    • Dale Fox
  6. Apr 9, 2023 · For Display issues one fix that is working is to Roll back or Uninstall the Driver on the Display Device > Driver tab, restart PC to reinstall driver. You can also try older drivers in Device Manager > Display device > Driver tab > Update Driver > Browse > Let Me Pick.

  7. Apr 21, 2024 · Try to manually detect your second monitor. Using the Settings app, you can sometimes force the system to detect your second monitor — here's how.

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