High Definition Multimedia Interface (HDMI) allows video and audio signals to be transmitted over a single cable. If the video's output does not automatically switch to HDMI, then you will need to switch manually. When you connect the HDMI cable to the computer, no video is output from the HDMI. However, the video still displays on the computer screen.

Follow the steps to switch video output to HDMI: Users can switch screens using specific key combinations. On most laptops, using Fn+F4 or Fn+F5 will switch between screens, such as the built-in monitor, an external monitor connected via HDMI, or both.