Sorry for the tough read, I agree, it was.
Yes, unplugging it from the Xbox did not do the trick. Two of them in the house. Both were unplugged from Xbox for 10 min, same result. I was finally able to get to the power plugsin the wall, huge cabinet in both rooms. Unplugged for 30 seconds, fixed the problem. After the first one worked, I did the same thing on the other one.
I called one of my coworkers who is a gamer, he told me what to do. I said , that doesn't make sense, he said, trust me it works .

It did! I don't get it either ,