In order to hard reset a HTC 7 Pro, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
HTC 7 Pro device will be brought back to the default configuration of a brand new device.
1. First, power up the device by pressing the Power button.
2. Next, hold down both Volume buttons.
3. Now press the Power button for two seconds.
4. Follow the on-screen instructions.
5. Your phone will reset and restart, returning to its default settings. Grats!