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How To Fix Second Monitor Is Not Detected

Simple and step by step.

Second displays are a quick and easy method to boost your productivity or improve your gaming experience. Not only that, but it also provides you with a broader canvas that may be used as an additional workspace for multitasking.

Although connecting a second PC display is normally a simple plug-and-play affair, Windows 10 may fail to identify the monitor in some cases. This problem can be caused by a damaged or malfunctioning cable, a lack of support for the second display on your PC, an outdated driver, or display drivers that can’t manage the second display.

Table of Contents

Second Monitor Is Not Detected Fixed in Windows 10

Start with the basic troubleshooting suggestions below. These steps may help you resolve your issue with the second monitor not being identified before you have to look into additional problems.

  • Check that the cable between your PC and the second monitor is the correct one. Windows will not identify the second monitor if the cable is damaged or malfunctioning. If you replace the cable and the new one works with your display, the old one is defective.
  • Disconnect any peripherals that could cause hardware problems between your PC and the second monitor, such as linked adapters, dongles, or docks.
  • To determine whether the problem is with the primary system or the display, try utilising the second PC monitor with a different system.
  • Check to see if the second monitor is plugged into a power supply. To turn on the display, some monitors feature a switch on the back.
  • Using the built-in controls on your display, make sure the correct input (HDMI, DVI, etc.) is selected.
  • Connect a second monitor to see if the problem is related to the graphics card.
  • To fix any compatibility difficulties or bugs, you may need to update the firmware of the display you’re using as a second monitor. Go to the display manufacturer’s website and look for information on how to apply the current firmware update on the support page.

Restart Your Computer

Many problems can be solved by restarting your computer, including when your second monitor is not detected. A restart terminates all other processes that may be obstructing the connection between your PC and the second display.

To restart your PC, click Start > Power > Restart.

Force Windows 10 to Detect the Second Monitor

If your PC and second monitor have no physical connection issues, you can use the Settings app to force detection of the second display.

  1. Open Settings > System.
  2. Click Display.
  3. Go to the Rearrange your displays section and click Detect.