Solution 7: Change the supported resolution and refresh rates Solution 4: Duplicate or extend your display on the external screen Solution 3: Check the port version setting on the external display Solution 2: Check the video input settings
Solution 1: Power reset your external display If you have problems connecting your Surface to a TV, monitor, or projector, try these solutions to identify the issue.
Open Windows Update Troubleshooting solutions To find out how, see Download drivers and firmware for Surface. Often, downloading and installing the latest updates for Windows and your Surface will fix many issues.