This article will introduce 5 different ways to fix the second monitor not detected issue on Windows 11 PC. Windows 11 allows users to connect a second monitor so that users can efficiently do several tasks at the same time. It is very easy to connect a second monitor, which usually run without any problem. But Windows 11 users reported that they had some issues connecting to a second monitor because the Windows 11 couldn’t detect the screen.
There can be a variety of reasons why the Windows 11 cannot detect the second monitor, such as connection problems, problems with programs running in the background, or something else entirely. Therefore, you may need to try various methods to resolve the second monitor not detected issue.
How to Fix Second Monitor Not Detected on Windows 11
1. Connection or cable problems
First, check if the second monitor not detected issue is due to an incorrect connection or a faulty or unsupported cable.
Make sure the second monitor is connected to power and turned on.
Make sure you select the correct input port and source.
Connect the second monitor to a different monitor to make sure the problem is caused by the monitor but not the cable.
To distinguish between HDMI/DisplayPort, refer to device manual to rule out mismatch between cable and port.
Disconnect the printer, USB device and camera to make sure the second monitor not detected issue is not caused by other external devices.
If you are connecting to wireless monitors, make sure they are connected to the same WiFi network.
If there is no problem with the above reasons, then it can be determined that the second monitor not detected problem is likely caused by software.
2. Force Detection of Second Screen
If the second screen does not light up after the second screen is connected to the computer, you can run force detection of the second screen through the “Settings” app on the device.
Open the Start Menu and click Settings under the Pinned Apps section.
In the left sidebar of the Settings window, click the System tab.
Click the Display tile.
NOTE: Connect the second screen to the computer before proceeding to the next step.
Scroll down and click the “Multiple Displays” tile under the “Scaling and Layout” section to expand the options. Click the Detect button next to the Detect Other Displays option. Next, Windows will automatically detect other monitors connected to the system.
3. Update the Graphics Driver
If the second screen is not detected after the force detection of second monitor, there may be a problem with the graphics card driver. Therefore, it is recommended that you update your graphics driver.
Open the Start menu and search for Device Manager, click Device Manager.
On the Device Manager screen, double-click Display Adapters, right-click the graphics card installed on the system to bring up the context menu. Select Update Driver.
Click Search for drivers automatically. If you already have a driver package to install, click the Browse my computer for driver’s option to open a file explorer window and manually locate the driver package.
After the update is complete, restart the PC and connect the second monitor again to check if the problem is resolved.
4. Roll Back the Graphics Driver
If the second monitor not detected problem occurs after you have updated your graphics driver, it is likely that the second monitor not detected issue is caused by the update of graphics driver. Therefore, you can try to roll back the graphics driver to solve the problem.
Open the Start menu and search for Device Manager, click Device Manager.
On the Device Manager screen, double-click Display Adapters, right-click the graphics card below the section to bring up the context menu, select Properties.
Click the Drivers tab and click the Rollback Driver button to start the rollback process.
In the window, click the single radio button in front of each reason, select a reason from the list to roll back the driver, and click the Yes button to roll back the driver.
Restart your Windows 11 computer and check if the second monitor not detected issue is resolved.
5. Make Sure Both Screens Have the Same Refresh Rate
Different refresh rates on the two screens may cause display conflicts, causing the second monitor not detected issue. So, you can try changing the refresh rate to solve the problem of second monitor not detected issue.
Open the Start menu and click Settings under the Pinned Apps section.
In the left sidebar of the Settings window, select the System.
On the right side of the window, click the Display tile.
On the Display settings page, click the Advanced Display tile under the Related Settings section.
Click the drop-down menu on the far right edge of the Select Refresh Rate tile under the Display Information section.
Select a refresh rate supported by the second monitor. Click the “Keep Changes” button to continue.
Conclusion
Now, you can choose any one of above 5 methods to fix second monitor not detected on Windows 11. Hope it works for you. If you have any other suggestions, welcome your comment.
