What to do When your Second Monitor Not Detected on Windows 10?

A few months ago, I was working on a Windows 10 machine I had just bought. And then to increase my work productivity or to do multi-tasks I have connected a second monitor to my machine. I was using a DisplayPort to HDMI adapter with a second monitor. Suddenly the second monitor goes blank and I have no idea what I did wrong. So, in this blog, we discussed what do I do when my second monitor is not detected on windows10.

First, we will tell you why this happens or what are the reasons behind this issue. And then we discussed the solution to this problem.

Reasons About Second Monitor Not Detected Error

There are so many reasons why the second monitor is not detected and it shows the error on the screen. Using the second monitor is a very good option if you want to increase the speed of your work.

• Maybe you are using an outdated driver.
• Wrong-set Project mode
• A difference in refresh rates of your monitors
• Windows Update Incompatibility

Top 6 Quick Fixes of Second Monitor Not Detected Error

Restart your PC

Many other computer-related problems can be resolved most quickly and easily by restarting your computer. Everything that is interfering with the connection between your PC and the second display is also closed when you restart your system, including any background running programs and other processes.
Click the Start button, then select Power, then Restart to restart your computer.

Manually check Monitor Settings

You can also detect monitor settings manually it is not a complex process, in a few minutes you can do this process and not require hard work. So I suggest you try manually detecting the display settings to sync with your video card if Windows 10 still isn’t able to detect the second monitor.

• Click on the Start button and go to Settings. Also, use the shortcut key Windows key + I to open Settings Windows.
• Click on System, Display windows open. scroll down and under the Multiple displays, there is Detect button click on it. Now, this method automatically detects other monitors or displays on your device.

If this method will not help you to detect your second monitor in windows 10 then there must be a problem with the graphic card and video card and the related driver.

Check your Video Driver Update Version

If you are facing a second monitor that has not detected an error or problem in your system then first check your video driver update version. It should be updated to the latest version. Because if you are using the wrong version then your systems also send you the error (the second monitor not detected) when you were trying to connect more than one monitor to your systems. from the manufacturer’s site, you can manually update your video driver, or automatically using appropriate software.

Follow the steps to check the video driver update version:

1. Simultaneously, press the Window and X key. 
2. Click on the Device Manager from the menu you will see on the left side of the screen.

3. Now you’ll see a window, you have to locate your display device.

4. if you find a yellow exclamation mark on it, means that it is the outdated version you need to update this driver.
5. Right-click on the driver.
6. Click Roll Back to roll back the driver.

7. Right-click on the driver, If the Roll Back option is unavailable.
8. Click on the Uninstall.
9. Now restart the system.
10. After all this, you need to again open the Device Manager, and to reinstall the driver, click on the Scan for hardware changes.
11. And the last step is to restart your computer again and then check if your Windows 10 detects your second monitor.

Disable Your Graphics Adapter

When you disable your graphic adapter your windows 10 detects your second monitor without any problems. But the issue can reappear because this is not a permanent solution to this issue. You have to do this again and again in your windows 10.

Follow the steps to disable your graphic adapter:

1. Simultaneously, press the Window and X key to open the menu.
2. Click on the Device Manager from the menu you will see on the left side of the screen.

3. Left-click on the Display Adapter option.
4. Right-click on your driver then choose the Disable device option from the menu.

5. Now you’ll see the confirmation message, you need to click on the Yes button to continue the process.

5. After all, you have to again Right-click on your driver then choose the “enable device” option from the menu.

Both Monitors Refresh at the Same Rate

The refresh rate of your screen refers to the number of times per second that the screen is able to draw a new image. This is measured in Hertz (Hz). The refresh is a very critical thing between the two or more monitors together with windows 10. If you connect the different-different refresh rate monitors together then always your windows 10 shows the error in detecting the monitors. 

Follow the steps to set the same refresh rate:

1. On your keyboard, press the Windows + I keys simultaneously to open the settings.

2. After the settings window, pop up on your screen then click the setting box.
3. Now you see a sidebar on the left side of your screen. You have to click on the Display button on this sidebar.

4. Now click the advanced display settings anchor tag on the bottom of the Display Window.
5. After that click on the “Display adapter properties for the Display 1” tag.
6. Then click “Display adapter properties for Display 2”.
7. You have to check the refresh rate of the two monitors. In case, if both have different refresh rates then change one of them to be the same in the Monitor section.
8. After this, you have to click on the Apply button.
9. Then in the last click on the Ok button.

Use Specialized Software for Multi-Monitor Setup

DisplayFusion is a first-rate device for Windows that is specialized in putting in place your multi-display setup. It’s clean to apply even though it comes with complicated functions with the purpose to remodel more than one display control manner right into a breeze. DisplayFusion also can be managed with hotkeys and the revel in is customizable via way of means of the use of the Power User Menu, and TitleBar Buttons, for your very own liking.

This great device additionally gives an outstanding library of wallpapers and display savers to pick out from and multi-display taskbars that will help you preserve your home windows. You don’t want to decide it from the start. You can nevertheless check it beneath neath an unfastened trial period.

Switch only to the First Monitor Temporarily

1. On your keyboard, press the “Windows + I” keys simultaneously to open the settings.
2. After the settings window, pop up on your screen then click the setting box.
3. Now click on the display setting box.
4. And then select Show only on 1 option.
5. Click on the button name as Save the changes.
6. Now you have to change the monitor settings to Extended and then save it again.

Check the Window Update Compatibility

If you have used all the above steps or we can say methods then try this method this is very effective and the easy way. When you are trying to attach the second monitor to your system then first always check your window update. If your window was not updated then it may show the error.

Follow the step to check the window update:-

1. On your keyboard, press the “Windows + I” keys simultaneously to open the settings.
2. After the settings window, pop up on your screen then click the Update and Security box.
3. Now click on the Window Update button.
4. After this click the check the update button.

Conclusion

Nowadays, it is very common to use multiple displays or monitors. Because it is not uncommon for people to use 3 or 4 displays at the same time. People face so many issues when they are trying to use multiple displays or monitors. So, in this article, we have discussed how to fix a second monitor not detected in Windows 10.

If you are having problems with your second monitor screen on Windows 10, you are not alone. There are many users who are also facing the same problems. It is difficult to determine the exact cause of the problem. This is because there are several reasons for this issue. However, the good news is that there are several solutions available for this issue.

We hope you enjoyed our blog post about what do I do when my second monitor is not detected on windows10. As always, if you have any questions, feedback, or suggestions, please don’t hesitate to reach out to us! Thank you for reading, and have a great day!