Troubleshoot external monitor connections in Windows 10

Applies to: Windows 10

Before considering troubleshooting options, check Windows Update to make sure that your device is current. For more info, see Update Windows 10.  Also, confirm that you’ve set up your multiple monitors according to Windows 10 requirements.

 

Troubleshoot issues that occur when setting up external monitors 

If you are trying to set up an external monitor and it’s not working, press the Windows Logo Key  + P to make sure that the Extend option is selected. If the Extend option is selected, try the following troubleshooting tips.

Troubleshoot issues that are occurring with an existing setup

Your multiple monitor set up has worked well and suddenly it’s not. Here’s a few actions you can take that should help get it going again.

How do I determine the manufacturer of my display adapter (graphics card)?

  1. In the search box on the task bar, type device manager.
  2. Select the icon for Device Manager and then select the arrow to expand the Display adapters section.

You’ll see the manufacturer's name and the name of your adapter or adapters.

Device Manager and Display adapters

Still not working?

If you've tried the steps in this article or don't see a solution to the problem, use Windows Feedback Hub to file a bug.

Include details about what you were doing or specific steps you were taking when the issue occurred. Log in to the Feedback Hub and follow the instructions to summarize and describe your problem. Next, select your category and then add enough additional info to recreate the problem. Your information helps Microsoft determine the root cause of this issue.

Open the Feedback Hub