This afternoon, I turned on my xbox, thinking to play more mass effect 3. I get a message saying to update the system, or it won't connect to live. I do so, and it fails partway through with the error code 396B - 397F - 1380 - 0702 - C000 - 0099. I shrug, thinking it must be a *** up somewhere up high that will be fixed, and try to play my game in offline mode. The disk, rather than loading the game, goes to the screen, and settings, it would show if you put in a movie in the disk tray, and none of the options do anything. On researching the code, it turns out that C000 - 0099 means I have tampered with my Xbox...which is utter bullcrap. The most "tampering" I have ever done with it is plugging in the wireless reciever on the back of it. over a year ago. NOTHING has been done to this console besides pushing the power and disk buttons. I am a very unsatisfied customer right now, as my x-box is quite literally useless as of right now. Any help with this would be greatly appreciated.