HP Compaq Presario,Presario 5116 Quick Start Manual page 73

Your Compaq Internet PC is easily upgradable. It is designed
with an Easy Access panel to allow quick and easy access to the
internal components. This chapter provides installation
instructions for most hardware components.
Note: If you would like to replace the system board or microprocessor, please
contact the Compaq Product Information Center at the telephone number
listed in your warranty.
Your safety is important. Before performing any procedures involving the
components, take a few minutes to read the Warning and Caution
statements in the "Introduction" chapter of this guide. Following the
guidelines in these statements will help reduce the risk of personal injury or
equipment damage.