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How to Fix Second Monitor Not Detected in Windows 10

By: Waseem Patwegar

If you are having problems adding a second monitor to your computer, you will find below the steps to fix the problem of Second Monitor not being detected in Windows 10.

Fix Second Monitor Not Detected in Windows 10

Second Monitor Not Detected in Windows 10

Adding a second monitor to computer can boost productivity, as it allows you to multi-task and work on multiple applications.

Dual Monitors are commonly used by Architects, Construction Cost Estimators, Web developers and Programmers.

All that is required to add a second monitor to computer is to plug the monitor to computer and allow Windows to recognize the second monitor.

If the second monitor is not being detected, the problem could be due to minor glitches, expired or corrupted drivers or faulty hardware.

1. Unplug & Plug Monitor to Computer

Unplug the Second Monitor from computer and also remove other devices plugged into the computer (Except Keyboard and Mouse).

After removing plugged-in devices, shut down the computer. Next, Plug the second monitor into computer and restart your computer.

If this does not help, move to other methods as provided below.

2. Force Display Detection

If the second monitor is not being automatically recognized by the computer, you will have to manually force Windows to detect the monitor.

1. Open Settings > click on System.

2. Click on Display in the left-pane. In the right-pane, scroll down to “Multiple Displays” section and click on Detect.

Force Detect Secondary Display

If Windows is still unable to recognize the second display, the problem could be due to outdated or corrupted display drivers.

Note: To rule out the problem of the second Monitor being defective, you can try to use the secondary display as primary.

3. Update Graphics Card Drivers

Follow the steps below to see if an updated driver is available for the Graphics Card.

1. Right-click on the Start button and click on Device Manager.

Open Device Manager on Windows PC

2. On Device Manager screen, expand the entry for Display Adapters > right-click on the Graphics Driver and click on Update driver.

Update Graphics Driver

3. On the next screen, select Search automatically for updated driver software option and follow the onscreen instructions to Update Driver.

4. Repeat the above steps to for other Graphics Cards installed on your computer.

After updating Graphics Driver, restart your computer and see if the problem is now fixed.

4. Download Updated Driver from Manufacturers Website

If Windows is unable to find the required driver, visit the Manufacturers website and see if an updated driver is available.

If a driver is available, download the driver software and follow the instructions to install the latest updated driver on your computer.

5. Reinstall Display Drivers

Sometimes the problem is due to the display driver not being properly installed on the computer.

1. Right-click on the Start button and click on Device Manager.

2. On Device Manager screen, expand Display Adapters entry > right-click on the Graphics Card and click on Uninstall Device option.

Uninstall Display Driver

3. Restart the computer and Windows should automatically install the right driver.

6. Roll Back Driver

If you are experiencing the problem after updating driver software, you can roll back the driver and see if this helps.

1. Right-click on the Start button and click on Device Manager.

2. On Device Manager screen, expand Display Adapters entry > double-click on the Graphics Card.

Graphics Card on Device Manager Screen

3. On the next screen, select the Driver tab and click on Roll Back Driver option.

Roll Back Display Driver

4. On the confirmation pop-up, tap select Previous version of the Driver performed better option and click on Yes.

5. Restart the computer and check if the problem is now fixed on your device.

Note: If Roll Back Driver option is not available, your computer does not have any previous driver to roll back to.

In this case, you will have to download an older version of the driver from manufacturers website and follow the instructions to install the driver on your computer.

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