How to Fix an Inactive HDMI Port on Intel® Arc™ A770 Graphics (16GB)

One of the HDMI ports stopped working (using five displays); four are currently in use.

1. Look for physical damage visible in the HDMI port (like broken pins, etc.)
2. Make sure that the Power Supply Unit covers the graphics card power needs (regularly, a PSU with more than 600 Watts will cover the need).
3. Ensure that the Operating System, graphic driver, and BIOS are up to date.

If you need to update your BIOS, contact the motherboard's manufacturers.