The currently installed driver for the Hewlett-Packard Extended Keyboard is not compatible with Microsoft Windows XP and will be disabled during the upgrade.
Windows XP will install a standard keyboard driver so your keyboard will work, but you will lose the functionality of the special buttons on this model.
For more information about this driver, visit the manufacturer's Web site at http://go.microsoft.com/fwlink/?linkid=380. Web addresses can change, so you might be unable to connect to this Web site.
For a list of devices supported by this version of Microsoft Windows, see the Microsoft Windows XP Compatibility List at http://www.microsoft.com.