Fix Second Monitor Not Detected in Windows 10

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If your second monitor is not detected on Windows 10, even if you know that the monitor itself works well and that the video output to which it is connected is good, do not lose hope.

A second monitor connected to your computer is like an additional and useful workspace when you need to monitor spreadsheets and have both visible at the same time. If you are a player, several screens can expand your game world. They can also be useful if you want to work on a task on one monitor while watching a video on another, for example. You can also quickly switch between applications – instead of using keyboard shortcuts like Alt + Tab, you can simply point the mouse at the other monitor.

Despite these advantages, problems with second monitors can be frustrating, especially if you use multiple monitors as part of your normal computer activities. This can reduce productivity or affect the gaming experience. If you have problems with a second monitor, this article is a good place to look for solutions.

So why doesn’t Windows 10 recognize a second monitor? Well, in this article, we will answer them and even give you the right decisions. There are many things you can do to solve this problem, including manually detecting the monitor, troubleshooting the hardware and updating your drivers.

Force your system to recognize your second display.

1. Press Windows+S key on your keyboard.
2. Type “Settings” (without quotation marks), then press Enter.
3. Click on System.
4. Go to the menu on the left, then click on View.
5. In the Multiple View section, click on the Detect button.

Downgrading the display driver to troubleshoot problems with the computer does not detect the problem with the second monitor on Windows 10.

To a large extent, Windows 10 cannot detect the second monitor malfunction, which can be caused by the incompatibility of the display driver. Monitor drivers may be incompatible after updating the Windows operating system, for example, Windows 10 Update, causing system errors such as freezing / modifying the PC, non-recognition of the second monitor, AMD problems, BSoD (Blue screen of death), etc. You can try resetting the display drivers to correct the connection error of the second monitor on Windows 10. Here’s how to do it.

1. Press Win + X to open the Device Manager.
2. Expand the Display Adapter category, then search for your display devices.
3. Right-click on it and select Properties.
4. Click on Roll Back Driver in the Driver tab.
5. Follow the on-screen instructions to perform the rollback.
6. Restart your Windows 10 laptop or desktop computer to see if it can detect your second monitor.

Make sure that the refresh rates on your monitor are set to the same values.

The monitor/screen refresh rate is the number of times per second that your monitor updates the images it contains. When two monitors are connected together to Windows 10, the refresh rate plays an important role. Some video cards do not support different frame rates at the same time.

Thus, if the screen refresh rate of your two monitors is different, it is unlikely that your second monitor will be detected.

Conclusion

The above selection of corrections for a second empty monitor should make it shine again. As always, perform appropriate checks on the cables and test the second monitor as the main monitor to ensure that it is not a hardware problem.

https://www.dell.com/community/Desktops-General-Read-Only/Windows-10-stopped-recognising-second-monitor/td-p/5180017

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