NEC MobilePro 880 - Manual (Page 105)

Using the NEC MobilePro 4-31
3. Locate the full reset button inside of the battery bay, as
indicated in the following figure.
Full reset button
A – Battery connectors B – Full reset button
4. Remove the USB mouse, if connected.
5. Using the stylus, press the full reset button. This resets the
unit and restores your system to its original shipping
configuration.
You may be able to use a recent backup of your data to
restore your system to a more recent configuration. Refer
to the section, “Backing Up and Restoring Your Data,” in
Chapter 3 for details about backing up and restoring your
MobilePro.