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Likely fix

Fix: HDMI not working

HDMI problems are usually caused by wrong input source, a loose or bad cable, wrong adapter direction, a sleeping source device, or display settings.

Quick answer

Select the correct HDMI input on the monitor or TV, reconnect the HDMI cable at both ends, restart the source device, then try another HDMI cable or port.

Important warning

HDMI input numbers matter. HDMI 1 and HDMI 2 are different sources on many monitors and TVs.

Try this

  1. 1 Check that the monitor or TV is set to the correct HDMI input.
  2. 2 Unplug and reconnect the HDMI cable at both ends.
  3. 3 Try another HDMI port on the monitor or TV.
  4. 4 Restart the computer, console, or source device.
  5. 5 Try another HDMI cable.
  6. 6 If using an adapter, check the direction.
  7. 7 Lower the resolution or refresh rate if the screen flickers or stays black.

Common causes

Wrong HDMI input selected.

Loose or damaged HDMI cable.

Bad HDMI port.

Source device is asleep.

Adapter is wrong direction.

Resolution or refresh rate is unsupported.

What to check next

  • Check the exact HDMI input selected on the monitor or TV.
  • Check whether the cable works with another device.
  • Check whether another HDMI port works.
  • Check whether the source device works with another screen.
  • Check whether lowering refresh rate helps.

This might need a cable or adapter

If this fix points to a cable issue, check the related cable guide before buying the wrong one.

Check the related cable →

FAQ

Why is HDMI not working?

The most common causes are wrong HDMI input, loose cable, bad cable, sleeping source device, wrong adapter direction, or unsupported resolution.

Should I try another HDMI port?

Yes. Try another HDMI port on the monitor or TV and make sure the input source matches that port.

Can a bad HDMI cable cause a black screen?

Yes. A damaged or low-quality cable can cause no signal, flickering, or black screens, especially at higher resolutions.

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