How to Fix Undetected Dual Monitor

How to fix undetected dual monitor? Dual monitors give you more screen space and can help you do more at once. Even though it’s easy to set up, you might get frustrated if your PC doesn’t recognize them.

You might run into one of the following problems: neither display works, the second monitor is not found, or the main screen goes black. It could be because the hardware needs to be compatible, the collection is set up wrong, or the drivers need to be fixed.

No matter the problem, it would be best to ensure that both monitors got enough power and weren’t connected loosely. Also, restarting the graphics drivers (Ctrl + Shift + Windows + B), updating Windows, and turning the computer off and on to see if that fixes the problem.

But first, check to see if your computer has the drivers for both monitors. This is easy to do in Device Manager, and here’s how to fix undetected dual monitor:

1. To open the Run interface, press the Windows + R shortcut key.
2. Here, type “devmgmt.msc” and click “OK.”
3. Open the Monitors option and check if both device drivers are there.

Compatibility

Even if forcing the computer to find the display didn’t work, there could be a problem with how you have the two monitors connected. The setup should work if you connect monitors to the GPU ports with individual video cables or adapters.

But if you have daisy-chained monitors, ensure both have an input port for DisplayPort 1.2 or Thunderbolt. Also, the main screen needs an MST-capable output port. If you connect other video cables, your second display will show a black screen.

Also, connecting your computer to a docking station requires a DisplayPort over USB-C (3.1) port. If the device is incompatible, it may not find it or the two monitors connected to the dock.

Setup Projection

If you set the projection to PC Screen Only, your secondary monitor may show No Signal, and the second screen only turns off the primary screen. Quick fix:

1. When you select Windows + P, the Project interface should display in the screen’s bottom right corner.
2. Choose either Duplicate or Extend to mirror the material on the computer.
3. After that, your display should flash so that you may start using the dual monitor setup.

GPU Software Configuration

Unexpected problems may arise if the GPU’s proprietary software’s multi-monitor settings are incorrectly set up. Various flaws and errors may have deactivated both displays.

Configuring the SLI settings is crucial if you have two NVIDIA GPUs. Similarly to this, AMD users must configure Eyefinity to use two monitors.

NVIDIA Control Panel

According to reports, most NVIDIA users have had trouble setting up numerous displays. First, make sure both screens are chosen in the control panel:

1. Launch the NVIDIA Control Panel by searching for it using the Windows icon in the taskbar.
2. Expand the display in the left pane and select Set up several screens.
3. Check the boxes next to both connected monitors in the right pane’s “Select the displays you want to use” section.

The multi-GPU (SLI setting) must be adjusted if you have installed two graphics cards and linked the monitors to separate ports. To achieve that, adhere to the guidelines below:

1. Expand 3D Settings in the left pane of the NVIDIA Control Panel.
2. Then navigate to the right pane and choose Configure SLI, Surround, PhysX.
3. Select Active all displays under SLI Configuration.
4. Lastly, verify that the dual monitors are now being picked up.

AMD Sofware

AMD’s Eyefinity functionality enables a multi-monitor arrangement like the NVIDIA GPU. An easy setup procedure is provided below:

1. Search for and launch the AMD Software: Adrenalin Edition from the Start Menu.
2. Then locate and click the settings icon in the top-right corner.
3. Next, select the Display tab.
4. Expand the AMD Eyefinity drop-down menu and select Quick setup from the Eyefinity section.
5. To finish the setup, adhere to the directions displayed on the screen.
6. Now, restart your computer with the monitors still attached.

Intel Graphics Command Center

Specific vulnerabilities or flaws in the Intel Graphics Command Center could disable your primary or secondary display. In certain circumstances, you’ll need to enable it manually:

1. From the Start Menu, launch Intel Graphics Command Center.
2. Pick the display icon from the left pane.
3. You’ll see that the icon on the undetected screen is disabled. Enable by doing a right-click anywhere on the box.
4. Now the computer ought to recognize the display. The projection choice can then be changed to Extended, as previously mentioned.

Modify the BIOS Settings

Some systems, by default, turn off integrated graphics when a discrete graphics card is found. The issue should be resolved by connecting the video connections to the dedicated GPU. 

However, if you want them to be connected to the integrated graphics, you must enable the former:

1. Restart your computer first. Press the designated key to access the BIOS interface before Windows wakes on the computer. Depending on your motherboard, this might be Del, F2, Esc, etc.
2. Go to Advanced Settings in Settings.
3. Go to Integrated Graphics Configuration from here.

Hardware and Devices Troubleshooter

If you’ve tried everything and still can’t figure out the problem, we suggest running the Hardware and Device troubleshooter. This will confirm that all of the hardware is installed successfully on your computer and check for any potential problems:

To start the troubleshooter, open the Run dialogue box and enter the command listed below: 

msdt.exe -id DeviceDiagnostic

1. After that, select Advanced.
2. Select Next after selecting the Apply repairs automatically checkbox.
3. To restart your computer, select Apply this repair. The troubleshooting should resolve all hardware-related problems after Windows has booted.

YOU MIGHT WANT TO READ:

• How To Use a Laptop as a Second Monitor
• How to Pick the Right Monitor for Your PC
• How to Use Multiple Monitors to Be More Productive

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