Windows Phone Hard Reset

To reset an unresponsive phone

If your phone is unresponsive and you can't reach Settings , you may be able to reset your phone using the hardware buttons. On Nokia Lumia phones (and some others), do the following to reset your phone:

1. Press and hold the Volume down  and Power buttons at the same time until you feel a vibration (about 10-15 seconds).
2. When you feel the vibration, immediately press and hold the Volume down  button until you see a large exclamation mark.
3. Once the exclamation mark appears, press the following four buttons in this order: Volume up , Volume down , Power , Volume down . Your phone should now reset and restart itself. (It might take a while for the reset to finish.)