In order to hard reset a HP iPAQ hw6910, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
HP iPAQ hw6910 device will be brought back to the default configuration of a brand new device.
1. Switch off the phone.
2. Press and hold Send & Reset & End & Power buttons.
3. Hold them down for five seconds and then release them. Done! The phone will now reset and restart.