I have the original xbox 360 and just recently when I go to the menu to turn off the xbox and hit turn off it wont. The screen goes black but the xbox light for first player blinks once every 5 to 10 secs for about 1 min then the system turns off. Yes my controller is wireless and no it is not plugged in when I turn the xbox off. My xbox is 4 years old and never had any problems. I just want to know why it does this.