If you don't wanna wait so long, get in touch with Microsoft directly. They will troubleshoot with you and either fix or replace the problem. If you have to send in the whole console/cord do advance exchange. They will put a hold on a card for the full price and charge 15 I think for shipping. You get a free game through this method. Charge comes off card when your defective box is recieved
Pondered upon a rainy plateau, with a coal forge, and many dragon.