HTC HD2 User Manual page 293

To perform a hard reset
1. With the phone turned off, press and hold the VOLUME UP and
VOLUME DOWN buttons, then press the END/POWER button
shortly and release it. You will then see this message on the
screen.
2. Release the VOLUME UP and VOLUME DOWN buttons.
. Press the VOLUME UP button to perform the hard reset, or press
any other button to cancel the reset.
This operation will delete
all your personal data,
and reset all settings
to manufacturer default.
Press VolUp to restore
manufacturer default, or
press other keys to cancel.
Chapter 1 Managing Your Phone 29