To perform a soft reset:
1. Locate the recessed Reset button on the bottom of your HP iPAQ.
2. Use the stylus to lightly press the Reset button.
The HP iPAQ restarts and displays the Today screen.

A hard reset stops all running applications, but does not erase any
programs or saved data. A hard reset also resets all hardware registers.
Be sure to save any unsaved data within a running application before
performing a hard reset.

To perform a hard reset:
1. Press and hold the Calendar and iTask buttons.
2. While holding down these buttons, use the stylus to lightly press the
Reset button on the bottom of the HP iPAQ for about two seconds.
3. When the HP iPAQ screen begins to fade, release the Calendar
and iTask buttons first, and then remove the stylus from the Reset
button.
4. Plug the device into the AC Adapter or press the Reset button
again.
The HP iPAQ resets and powers on.

A clean reset clears all user-installed settings, programs, and data, and it
restores your HP iPAQ to factory settings. If you perform a clean reset, your HP
iPAQ loses all data, including data in Persistent Store.

To perform a clean reset and return your HP iPAQ to factory settings:
1*. Press and hold the Calendar, Power, and Messaging buttons.
2**. While holding down these buttons, use the stylus to lightly press the
Reset button on the bottom of the HP iPAQ until the device
restarts.
3. When the HP iPAQ restarts, release all of the buttons, and then
remove the stylus from the Reset button.
The HP iPAQ restarts and powers on.

* for the HX4700/4705 series, hold down the [Contacts] + [Inbox] buttons instead.
** for the HX4700/4705 series, there will be a clean reset confirmation. To cancel, press iTask and to confirm, press Calendar