okay, first off I flashed a kv on my falcon using xell. i loaded my xbox back up and i get 2 red lights on player 3 and 4. and my screen never shows the boot logo or anything. so i reflash my original nand and now everytime I go to sign into my profile it freezes, everytime i hit the guide button it freezes, everytime i go to xexmenu it goes black... any ideams on whats going on?