Has anyone seen red and green pixels flickerinng in some games?

Hello Cesar Dario Pérez Rivera,

Welcome to Microsoft Community.

Try using that cable with another device to see if the problem persists, or plug it into a different port on your TV. You might also try using a composite cable or an AV connection to see if you get the same pixels. If everything else checks out, it has to be the cable, but if it doesn't, there could be a problem with your Xbox's HDMI port.

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I am having a weird pixel problem On dashboard the far right lower corner has one green pixel that should be black.. It is always on dashboard. And on nba 2k 2014 some screens have the outside edge lines with the wrong color pixels also...

have you checked your hdmi connection make sure it's secure.

Also try using a different port on TV see if that helps 🤔

Its unlikely to be the xbox. I'd be more inclined to look at the TV or the HDMI cable you're using to connect the two.

- Jason

It’s most likly the TV, or the connection to thr TV. Can try another HDMI cable and see it that helps. But it most likely the TV.

First, try plugging the HDMI cable into another HDMI plug on your TV (or receiver depending on your setup). If you are still getting artifacts and pixels, try swapping HDMI cables with another HDMI device you may have.
If this solves your issue, then you have a defective HDMI cable. You do not need a specific XBOX HDMI cable. They are universal for the most part.

Hope this helps!