As in previous Windows versions, Windows 11 also supports a second monitor. Connecting a second monitor to your computer has advantages.
You can use a second monitor to project or expand the content of the primary monitor. For example, it helps you get a better and significantly larger view if you need it for video editing or gaming.
It is relatively simple to configure the second monitor in Windows 11. In addition, there are plenty of tools available in Windows 11 to solve problems with not detecting an additional monitor.
However, there are also some checks you can perform in advance. This is because it does not always have to be a problem in the operating system. There can also be problems with hardware components such as cables, links, and ports.
- Make sure the second monitor is connected to a power outlet and that the monitor is turned on.
- Make sure the second monitor is connected to the correct video port on your computer.
- In the software settings of the second monitor, make sure the correct video port (source) is selected.
- Check the HDMI or Display Port connections, ensuring they are clean and dust-free. In addition, check the video cable for breakage and make sure you are using the original video cable(s).
- If you have other peripherals connected, such as a printer, cameras, or other hardware connected via USB, temporarily disconnect this hardware.
- If you are using a wireless connection when connecting the monitor, make sure that both the computer and the monitor are connected to the same wifi network.
- If possible (if you are knowledgeable enough about computers) check the BIOS. Sometimes specific ports on the computer are disabled in the BIOS.
The second monitor is not detected in Windows 11
If you have a second monitor connected and it is not automatically detected by Windows, you can force it. Forcing means that Windows 11 will search for the connected monitor.
Forcing the detection of the secondary monitor
Right-click on the Start button. Then click on Settings in the menu. Then click on System on the left and then on Display.
Click on “Multiple displays” and then click on the “Detect” button, next to “Detect other display”.
If the second monitor is still not detected, you can update the monitor drivers to the latest version.
Updating the display adapter driver to the latest version
Right-click on the Start button. Click on Device Manager in the menu. Then click on “Display adapters” right-click on the driver, click on “Update driver” and follow the procedure.
Unfortunately, I can’t mention anything more because updating the driver depends on the make and model of PC or laptop. In most cases, you can search online or search on your PC. However, some technical knowledge is required.
Install display adapter previous driver
Should the problem have arisen after installing display drivers, you can revert this.
Right-click on the Start button. Click on Device Manager in the menu. Then click on “Display adapters” right-click on the driver, and click on “properties”.
In the new window, click on “Driver” tab and click on “Roll Back driver” button. Use the previously installed driver if the device stops working after updating the driver.
Unfortunately, I can’t mention anything more about this because reverting the driver depends on the make and model of the PC or laptop. Some technical knowledge is required.
Adjusting refresh rate for both monitors.
If a different refresh rate is set for both monitors in Windows 11, this can cause problems. Changing the refresh rate for both monitors to the same refresh rate may be the solution to a second monitor not working.
Right-click on the Start button. Click Settings from the menu. On the left, click System, and then click Display. At the bottom, click on “Advanced Display” and select the monitors from the list to adjust the refresh rate.
Select the primary monitor first and then the second monitor. At the bottom under “Choose a refresh rate” select the same refresh rate for both monitors.
Reset the Second Monitor Settings
Each monitor also has a physical “setup” button on the back or bottom of the monitor. This allows you to change settings such as source selection, colors, contrast, etc. Also, you can often reset the settings to default values. Again, this may be different for each monitor.
I recommend searching the second monitor’s menu for a “reset” or “restore” menu and restoring the settings. Then disconnect the video cable and, after 10 sec, reconnect it to the HDMI/Display port of your computer.
After this, check if the second monitor in Windows 11 is now detected.
I hope this has succeeded in making your second monitor work in Windows 11. Thank you for reading!