Hard Reset / Master Reset HTC HD7 T-Mobile Phone

If the phone is locked, frozen, or unresponsive, you can hard reset it using the hardware keys instead of the menu. A hard reset restores the original factory settings and may erase all downloaded content, including ringtones, images, programs, and contacts stored in the internal memory.

To perform a hard reset using hardware keys, follow these steps:

1. Back up all necessary data by copying any files you want to save from your phone to your computer.
2. With the phone turned off, press and hold the Volume Up and Volume Down keys.
3. While still pressing the Volume keys, quickly press the Power/Lock key.
4. When the device displays 'This operation will delete all your personal data, and reset all settings to manufacturer default. Press Vol Down to restore manufacturer default, or press other keys to cancel.', release the Volume keys.
5. Press the Volume Down key to reset the device.