(PLEASE HELP) My Xbox One X screen is flickering

it happened again, power cycling doesn't help

Please try to power cycle you console and see if that helps out:

How to power cycle:

1. Turn off the Xbox One console by pressing the Xbox button on the front of the console for about 10 seconds until it shuts down completely.
   
2. Unplug the console's power cable. Wait 10 seconds.
   
   Important Be sure to wait 10 seconds. This step resets the power supply.
   
3. Plug the console power cable back in.
   
4. Press the Xbox button on your console to turn on the Xbox One.
   

what is your Problem?

Flickering Screen on Xbox

Flickering Screen on Xbox with HDR

Screen goes Black on HDR with Xbox ?

You talk about going black but have flickering on Topic.

There was an official Problem with HDR Flickering on that TVs and Xbox but that should be fixed a time ago

The screen flickers when HDR or HDMI ULTRA HD Deep Colour is on in the TV, after a while of flickering it goes black, then the TV loses the signal from the Xbox. That's
my problem.

If I deactivate HDMI ULTRA HD Deep Colour, then there's no more flickering and no more black screen.

Well it isn't fixed yet, I'm 100% sure I am on the latest firmware on both the LG C9 and the Xbox One X.

Hey, having the same problem here. Using Xbox One X. It was working fine for a year and recently started flickering. I have bought a new 4k tv and it's even worse. I bought a new high speed HDMI cable: new set of issues - complete black screen or it flickers
heavily. Went to test the XBOX on a 3rd tv and it flickers as well. I'd appreciate some help.

I’m having the same issue, but its on the Xbox One X, and its only with HDR. Screen will flicker on and off randomly. If i wait long enough screen will stay black, never come back. I had to disable HDR on the port, flicker goes away ( so does hdr). Everything
worked before the most recent update. Happens on every port, and only happens wjth my xbox. Thoughts?