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How to Fix your Second Monitor Not being Detected Windows 10

Today, one of the best ways to improve your multi-tasking experience and boost productivity is by connecting a second monitor to your PC. To be precise, a second monitor could be very helpful for work. However, sometimes, despite connected to the system, Windows is unable to detect the second monitor and it sends this message ‘Windows 10 cannot detect the second monitor or didn’t detect another display’. Do not worry because we’ve listed below the three important and effective methods to fix this problem:

Method 1: Update and Re-install Driver Software:

Sometimes Windows 10 cannot detect the second monitor because the video card or graphics card does not have the latest drivers installed. So update the device drivers and see. You can even re-install them if updating the drivers doesn’t work, with below-provided steps:

  • First of all, type ‘Windows key + X’ key together and then, choose ‘Device Manager’. 
  • In the Device Manager Window, if you see a yellow exclamation mark against it, you need to click right on it and select ‘Roll back’ to roll back the driver.
  • And, in case that option is not available, right-click on that and in place of ‘Roll back’ select ‘Uninstall’ to ‘Restart’ the system.
  • Then, open ‘Devices Manager’ again and select ‘Scan for hardware changes’ to finally install the driver.

Method 2: Detect Monitor Settings Automatically

If your system cannot detect the other monitor, click right on ‘Start’, select ‘Run’ to open ‘Run box’. Then type ‘desk.cpl’ in that box and hit ‘Enter’ to open the ‘Display Settings’. More often, the second monitor should be detected automatically, but anyhow if not, then you can try detecting it manually.

Method 3: Detect Monitor Settings Manually:

  • To detect monitor settings manually click on the ‘Start button’ and then open the ‘Settings’ app.
  • In that go to ‘System’ and there in the ‘Display tab’, under the ‘Multiple Displays’ column you need to click on ‘Detect’.
  • This ‘Detect button’ helps the operating system to detect other monitors and you can also connect to a wireless display there.

Method 3: Troubleshoot Hardware:

  • Sometimes the cable was at fault therefore; try to change the ‘HDMI cable’ that connects the second monitor.
  • Other than that try using the second monitor with other systems as it would help to know whether the problem is with the monitor or the primary system.
  • Lastly, try to run the ‘Hardware & Devices Troubleshooter’ and see.

If you want to learn more learn our related posts here How to Stop Windows 10 Update


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