na stronie HP:
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00715144/c00715144.pdfznajdziesz instrukcję obsługi...tam masz wszystko jak na dłoni...
To perform a clean reset and return your HP iPAQ to factory settings:
1. Press and hold the Answer/Send, Power, and End Call buttons.
2. While holding 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.