If the cable is damaged or malfunctioning, Windows won’t detect the second monitor. … Check whether the second monitor is connected to a power source. Some monitors have a switch at the back to power on the display. Make sure the correct input (HDMI, DVI, etc) is selected using the . . . Read more

Sometimes you have only one HDMI port on your computer (typically on a laptop), but need two ports so that you can connect 2 external monitors. … You can use a ‘switch splitter’ or ‘display splitter’ to have two HDMI ports.

At the minimum, you’ll need two video-out ports to connect both your monitors. Generally, there are four types of ports: VGA, DVI, HDMI, and Display Port. Note: If you do not have the required ports, then you’ll need an external connector/adapter to hook up the monitors to the system.

HDMI splitters can help you solve HDCP errors. … HDMI splitters (and graphics cards) can send video output to two HDMI monitors at the same time. But not just any splitter will do; you need one that works well for the least amount of money.

Method 1 – Manually detect Monitor settings Click on the Start button to open the Settings window. Under the System menu and in the Display tab, find and press the Detect button under the heading Multiple Displays. Windows 10 should automatically detect and other monitor or display on your device.

Use an adapter, such as an HDMI to DVI adapter. This works if you have two different ports for your laptop and your monitor. Use a switch splitter, such as a Display splitter to have two HDMI ports. This works if you have only one HDMI port on your laptop . . . Read more

What can I do when my dual monitor is duplicating but not extending? Make sure Extend is already selected under Project menu. Press Windows key + P keyboard hotkey simultaneously in order to bring up the Project menu. … Update the graphics card driver. … Reinstall drivers. … Run the . . . Read more

If the cable is damaged or malfunctioning, Windows won’t detect the second monitor. … Connect another working monitor to check if the issue is with the graphics card. You may need to update the firmware of the display you’re setting up as a second monitor to fix any compatibility issues . . . Read more

Restart everything: Shut down Windows and all your monitors. Then, turn everything on and boot up again. This can often fix your issue. If necessary, roll back driver updates: If your display driver recently updated, it could be causing the issue.

Sometimes you have only one HDMI port on your computer (typically on a laptop), but need two ports so that you can connect 2 external monitors. … You can use a ‘switch splitter’ or ‘display splitter’ to have two HDMI ports.