The most common cause is an HDMI cable that does not have enough bandwidth for 4 K; other causes include using a non-4 K HDMI port, turned-off HDR/deep-color settings, or refresh rates that do not match
1. Start In Low Resolution
This method helps if you see a “No signal” message or if your Xbox is stuck at a lower resolution.
2. Try Different HDMI Ports
If you are not getting any signal from the TV after connecting the cable, there is a good chance something is wrong with the HDMI cable or the HDMI ports. Follow the steps below to test the HDMI ports.
3. Check and Test Your HDMI Cable
If there is no issue with the HDMI ports, your HDMI cable is probably faulty, damaged, or not suitable for 4K. Some HDMI cables may also be incompatible with your TV due to different HDMI specifications.
4. Change Power Mode Settings
If you are using an HDMI splitter and not receiving any signal from the TV, this method might help.
5. Examine Your TV
If the above solutions did not work, your TV could be the culprit.
