If you want to just get to the prompt to change the passcode and you know the security question, type in:
X, Y, Left Trigger, XIf you want to reset all settings to factory default you would press:
Code to restore factory defaults.LT, RT, X, Y, LB, RB, D(dpad), Y, U(dpad), D(dpad)Go to
console settings and all the way down to select system info.Enter code above.Then you will be prompted to restore factory defaults.Your 360 will then restart and go to the dashboard.When prompted to restore family settings, you would choose to skip it.Also,
you can do this while removing all storage devices if you are concerned
of any changes. Just turn off your system before and after while
disconnecting your hard drive or memory units.