In order to hard reset a dopod C750, you should perform the following steps.

Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
dopod C750 device will be brought back to the default configuration of a brand new device.

1. Turn off the phone.

2. Press and hold Left Softkey and Right Softkey softkeys and Power simultaneously.

3. Insert the stylus into the hole in a location shown in the picture.
4. Keep holding the buttons and follow the on-screen instructions. There, done.