To connect a computer to a TV with HDMI, plug one end of an HDMI cable into your computer's HDMI port and the other into the TV's HDMI input, then select the correct input source on your TV. This method provides a single-cable solution for both high-definition video and audio, giving you a larger screen for work or entertainment.
Check your computer and TV ports
Begin by identifying the HDMI ports on both devices. On your computer, look for a small, trapezoid-shaped port labeled "HDMI," typically on the side or back. On your TV, find an "HDMI" or "HDMI Input" port, usually on the back or side panel. If your computer lacks a direct HDMI port, you will need an adapter, such as a USB-C to HDMI, Mini DisplayPort to HDMI, or DisplayPort to HDMI adapter. These adapters allow you to connect a cable from the computer's alternate port to the TV's HDMI input. This same adapter approach also lets you connect DVD player to computer with HDMI if your computer only has video output ports, and you can similarly connect PS4 to laptop with HDMI to play console games on a portable screen.
Get the right HDMI cable
Choose an HDMI cable long enough to reach from your computer to your TV without straining the connection. Measure the distance between the two devices before purchasing. Standard HDMI cables work perfectly for most connections, and expensive cables are not necessary for a standard connection.
Connect the HDMI cable to your computer and TV
Take one end of the HDMI cable and insert it firmly into the HDMI port on your computer. Then, take the other end and insert it firmly into an HDMI input port on your TV. If your TV has multiple HDMI inputs, remember which one you used, as you will need to select it later.
Configure display settings on Windows
After connecting the cable, press the Windows key + P to access display projection options. This shortcut lets you choose between "Duplicate" (mirror your computer screen on the TV), "Extend" (use the TV as a second monitor), or "Second screen only" (show content only on the TV). Select the mode that fits your needs.
Configure display and sound settings on Mac
On a Mac, go to Apple menu > System Settings > Displays to configure how the TV is used, including mirroring your screen or extending your desktop. To route audio to the TV, go to Apple menu > System Settings > Sound > Output and select your TV or HDMI device. This ensures sound plays through the TV speakers instead of your computer.
Test the connection and troubleshoot
Turn on your TV and use its remote or on-screen menu to select the correct HDMI input you connected the cable to. If you plugged into the "HDMI 2" port, for example, you need to switch from HDMI 1 to HDMI 2 on the TV's input list. Play a video on your computer to test both video and audio. If the screen is blank or there is no sound, re-check that both ends of the HDMI cable are firmly connected and that the TV is set to the correct input source. If the issue persists, verify that your computer's display settings are configured to send output to the TV.
