The P300 has 3 kinds of reset mechanisms, 1. Soft Reset: you can keep all DRAM data.
Procedure: Push the Reset button
2. Hard Reset/Save SDRAM -- Use hard reset/save SDRAM mode to reset the MobilePro P300 without losing the data in SDRAM. Use this mode if the safe software reset mode doesn't improve system operation.
Procedure: Reset Button and Power Buttons at the same time.
3. Hard Reset/ Clear SDRAM: You will lose all data. Use to reset the MobilePro P300 and delete the contents of SDRAM. Use this mode to reset the MobilePro P300 to its factory defaults. This is also referred to as a hard reset/clear SDRAM. **Caution** This procedure will delete all user installed applications and user data. If necessary, back up your data before performing the hard reset.
Procedure: Push the Reset, Power, and Record Buttons at the same time