原帖由： sethhusk12 ,
Go to Microsoft site & download the offline tool, make sure you get the version that covers all versions for factory reset. Copy that file to flashdrive. Insert in USB port of console with the XBOX off. Next step could take a few tries, press & hold sync button, while still holding sync button press & hold eject button, while still pressing sync & eject press & hold power until it beeps a few times. That tells you that it detects USB stick & the file on it. If it doesn't beep 3 times (I think its 3) you didn't do the button presses quick enough. Doesn't always fix but worth a shot. FYI the restore takes a while so don't be worried if you don't see anything on the screen for a bit. Don't power off while it is restoring, be patient.