HDMI won't work on Xbox Series X

Can't say for sure. This is an older HDMI 2.0 monitor. While most work, some of these displays limit the HDMI refresh rate to 100Hz, which would make 120Hz impossible.

You likely won't find this information any many reviews as Display Port is the common way to connect these displays to the main system they were designed for, PCs. Connecting gaming monitors to consoles in a recent thing, and not all monitors work well with Series X over HDMI. Just because the specs say 165Hz, doesn't mean you're guaranteed to get 120Hz over HDMI.

These monitors however, are all compatible with Xbox Series X|S https://www.rtings.com/monitor/reviews/best/xbox-series-x

Make sure the TV is set to the correct HDMI input the console is connected to.

Use TV Remote SOURCE button and choose HDMI 1 or 2 etc.

Hi Shay, my name is Rodrigo. I'm an Independent Advisor and a member of the Microsoft community and I'd love to assist you today.

I am sorry to hear that.

Please, try power cycling the console.

To do it, follow these steps:

Turn off your console by pressing the Xbox button on the front of the console for about 10 seconds, until it shuts down completely.

Unplug the console's power cable. Wait 10 seconds.

Important Be sure to wait at least 10 seconds. This step resets the power supply.

Plug the console power cable back in.

Press the Xbox button on your console to turn it on.

For more information: https://support.xbox.com/help/hardware-network/power/restart-or-power-cycle-console

Let me know if it works!

If that still does not work, please, register your device on this link: https://support.xbox.com/help/hardware-network/warranty-service/register-your-product

Then, fill out the repair form: https://account.microsoft.com/devices/select-device-for-repair

You can check the warranty terms here: https://support.microsoft.com/help/...ce-plans-and-terms-conditions-for-your-device

I hope this helps.

Hi,

There is more than enough bandwidth for 1440P @120Hz with HDR on an HDMI 2.0 Monitor. On the current consoles Microsoft decided to lock HDR to 4K displays, but with the Series S that won't be an issue anymore.

HDMI standards are backwards compatible, so you won't need an HDMI 2.1 compliant Monitor to use Series X or S on an older monitor or TV that only has HDMI 2.0.

Xbox One X and S can be very fussy when it comes to full monitor support. But if you bought a monitor that fully supports the Xbox One X then it should support the same features on a Series X/S.

My advice would be to check reviews of monitors actually running on the current consoles with 120Hz support. There are loads of videos on YouTube. Just looking at the specs on a website may not be enough.