HELLO ALL I JUST TRIED TO HOOK MY XBOX ONE UP TO MY CABLE BOX AND AFTER BEING UNSUCESSFUL I TRIED TO PLAY MY SYSTEM AND I STARTED TO HAVE THE NO VIDEO/AUDIO ISSUE,,,,TO FIX THE PROBLEM I HOOKED MY XBOX ONE SYSTEM UP TO A DIFFERENT TV AND I WENT TO:
TV & OneGuide
then I closed out of OneGuide
and went into devices and cleared my TV model,cable box model and audio model
I closed out of everything and shut my system down and hooked it up to TV that was giving me the issue and everything worked fine.
hope this helps