Beneath show within the xbox settings what do you may have listed? 720p? 1080? 4k? Examine there. Change that. Additionally look beneath the video mode and ensure to examine containers that appear to be unchecked, if allowed. Make sure that the standard is about to the very best so it tries to repair itself.
Additionally unplug the Xbox and ensure all the ability is drained for it and plug it into a distinct port in your TV.
My cash is most undoubtedly on what the opposite person mentioned although. This appears like a TV setting. It have to be set to one thing else. Lookup your TV guide and tips on how to change facet ratio.