My tv stopped connecting to my Xbox

Check that the HDMI cable connection to your console is secure. ... Check that the HDMI cable is connected to
the "out to TV" port on the console. Power cycle your Xbox One: Press and hold the Xbox button for 10
seconds to turn off the console, and then turn it on again. Reset your display settings.

Joshua,

Assuming you own an Xbox One, please follow these instructions to reset your display settings:

1. Hold the power button for 5-10 seconds to turn off your Xbox.
2. Hold the power and eject buttons for 15-20 seconds to turn on your Xbox. Do not release the buttons until you've heard a second chime.
3. Your display settings should have reset to 640x480.

In you are using an Xbox One S, hold the power and bind buttons for 15-20 seconds.

[If you are using an Xbox 360, hold the Y button and the right trigger as the console boots.]

If none of these solutions work, try performing a factory reset via a USB drive. The instructions are located here:

https://support.xbox.com/help/hardware-network/console/reset-console-to-factory-defaults

If that does not work, your hardware may be defective.

Regards,

Under Scored

It Happen to me on a Xbox 360 Slim and i solved it with the procedure that @Under_Scored Posted

At That time i got the procedure from Xbox online Support

This happened to me. I was able to fix it by doing a hard reboot of my xbox. I then unplugged my tv and unplugged the hdmi cable between both the xbox and the tv. Then I plugged everything back in.

If I switch my console back to my other TV it works fine and I no longer have the LIVE connection issue.

The LIVE issue: When I try to connect it works for a little while then stops. I do not get an error code I get a message. When I try to connect sometimes it does connect but then a little later it stops, and sometimes it doesnt connect at all. Also when
the TV is on it turns the room into a dead zone for Wi-Fi and even my Laptop's connection stops working.