Windows 11 not detecting second monitor? Here’s what to do

by Vlad Turiceanu
Vlad Turiceanu
Vlad Turiceanu
Editor-in-Chief
Passionate about technology, Windows, and everything that has a power button, he spent most of his time developing new skills and learning more about the tech world. Coming... read more
Affiliate Disclosure
  • A dual monitor setup helps you to enjoy multitasking, but our readers complained that the second monitor is not getting detected.
  • If Windows 11 is not detecting the second monitor, an outdated graphics card driver can be the reason.
  • The HDMI cable or port might also be also responsible for your machine not detecting the additional display.
Windows 11 not detecting second monitor

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Many of our readers have complained that Windows 11 is not detecting the second monitor in a dual monitor setup.

A second monitor will definitely increase your productivity, especially if your work requires running multiple programs simultaneously.

Windows 10 users have also faced similar issues while using two monitors and as you have probably guessed, the solutions to fix the problem are very similar.

There can be several reasons why the OS can’t detect the second monitor and we compiled a list of all the probable factors that may cause this problem.

Why is my second monitor not registering?

As you know, you need to use the HDMI port or the VGA port on your computer to connect a second monitor with it.

But any issue with the ports or the cables can be the reason why your second monitor is not registering.

Windows 11 is not detecting your second display

However, the error message you find in the Settings app doesnt offer too many details and just writes We didn’t find another display.

Thus, a preliminary measure will be to check and confirm the physical ports of your PC are working, and the cable you are using is in good condition.

Apart from that, if you haven’t updated your display driver in recent times, it can lead you to the issue. An outdated graphics card driver may create compatibility errors. That can cause your secondary display not to be detected.

No matter the reason behind the problem, here we have jotted down all the easy workarounds that can fix the Windows 11 not detecting second monitor issue.

If you are using Windows 10 and the OS is not detecting the secondary display, do not hesitate to check this guide on how to fix Windows 10 not detecting the second monitor.

How do I fix Windows 11 not detecting second monitor?

1. Restart your PC

  1. Open the Start menu from the left-side of your taskbar.
  2. Then click on the Power icon from the right.
  3. Select Restart from the list of options to restart your PC.

Restarting your PC is the easiest solution to apply if the second display is not detecting. It can be a temporary problem, and a simple restart of Windows is enough to fix it. In fact, the resolution has worked on Windows 10 PCs as well. 

If you are using a laptop connected to an external monitor for a better viewing experience, then simply closing its lid is said to work for many users.

Often the reason behind the error can be a conflicting program that is running in the background. However, when you restart the computer, the program running gets closed, and you may get away from the issue.

2. Update the display driver

  1. Press the Windows key + R to open the Run dialog box.
  2. Type devmgmt.msc on the search field and hit the Enter button.
  3. Locate and expand the Display Adapters tab on the Device Manager window.
  4. Right-click on your graphics card, and from the list of options, select Update driver.
  5. Select the Search automatically for drivers option as the Update driver window opens.
  6. Now, wait until Windows completes the search for the latest driver.
  7. Finally, follow the simple on-screen process to update your display driver to its latest version.

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An outdated display driver can cause conflicts between the software and hardware components of your PC.

Thus, if you haven’t updated the display driver in recent times, following the steps above will update it and fix the issue. You can opt for driver update software tools such as DriverFix to keep your display driver updated automatically. 

3. Change the display frequency

  1. Press the Windows key + I to open Settings on your PC.
  2. Then, click on the Display tab under System settings.
  3. Now, scroll down and click on the Advanced display option.
  4. Then, from Select a display to view or change its settings tab, choose the display for which you want to change the frequency.
  5. Finally, from the Choose a refresh rate tab, select a refresh rate that both the displays support.

Having a different refresh rate on the second monitor can cause a temporary software conflict on your system.

Eventually, that may lead to Windows not detecting the monitor. However, you can resolve the issue by changing the display frequency settings.

4. Roll-back the graphics card driver

  1. First, click on the Search icon on the toolbar and type Device Manager.
  2. Now, open Device Manager from the search result.
  3. Then, locate and expand the Display adapters tab from the list in the Device Manager window.
  4. Right-click on your graphics card driver and select Properties on the list.
  5. On the Properties window, click on the Driver tab and select the Roll Back Driver option.
  6. On the warning pop-up, select the option Previous version of the driver performed better.
  7. Finally, click on the Yes button below.

Occasionally, an updated driver version comes with bugs. Rolling back to the previous version will resolve the problem in that case.

How do I get Windows to recognize my monitor?

If your Windows is not recognizing the second monitor automatically, you can force your OS to detect it. Follow the below steps to do so:

  1. Click on the Windows logo on the toolbar to open Windows Start Menu.
  2. Select Settings from there and click on System.
  3. Then, scroll down and expand the Multiple displays tab under Scale & layout section.
  4. Finally, click on the Detect button right after the option Detect other display.

Once you follow the steps properly and your second monitor is connected to the power supply and the computer, it will surely be detected by your machine.  

At times, the operating system doesn’t detect the second monitor automatically; thus, manually detecting it is always an option. 

Customizing your second monitor improves the usability of your computer. You can use the second display to run games or any particular application.

How do I customize my second monitor?

While using a second monitor with your PC, Windows offers four different options. Depending on your need, you can select one and start working with it.

Here is an overview of how to customize your second monitor as per your work requirement.

As you connect the second display with your computer, Windows 11 will mirror your primary display on it. If you need to change the usability, follow the steps below.

  1. Press Windows key + P on your keyboard.
  2. Then from the list of following options, choose the one that suits your purpose.
  • PC screen only will allow you to see things on a single display
  • The Extend mode will let you see your desktop across multiple screens where it’s possible to use two displays for different activities
  • The Duplicate option comes by default as it mirrors the primary display on the second one
  • With The Second screen only feature, you can see everything only on the second screen

There are various dual monitor software tools available that may help improve your experience in a dual monitor setup. Third-party dual monitor solutions allow you to customize a lot more than you can usually do on Windows.

Hope the workarounds were helpful to you. Do not hesitate to use the comments section below to tell us which method worked for you.

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