Likely fix
Fix: Laptop to TV says no signal
A laptop-to-TV no signal issue usually comes from wrong TV input, display mode settings, bad HDMI cable, USB-C video support problems, or the wrong adapter.
Quick answer
Select the right HDMI input, reconnect the cable, choose Duplicate or Extend display mode, and confirm your USB-C adapter supports video.
Important warning
Not every USB-C port supports video. Some USB-C ports only charge or transfer data.
Try this
- 1 Select the correct HDMI input on the TV.
- 2 Reconnect the cable or adapter at both ends.
- 3 Wake the laptop and unlock it.
- 4 On Windows, press Windows + P and choose Duplicate or Extend.
- 5 On Mac, open Displays settings and check for the TV.
- 6 Try another HDMI cable.
- 7 If using USB-C, confirm the port supports video output.
- 8 Try a lower resolution or refresh rate.
Common causes
Wrong TV input.
Laptop display mode not set to external screen.
USB-C port does not support video.
Adapter is wrong or faulty.
Bad HDMI cable.
Unsupported resolution or refresh rate.
What to check next
- Check TV input.
- Check Windows + P or Mac Displays settings.
- Check USB-C video support.
- Check another cable.
- Check another TV or monitor.
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.
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