I have just got XP Pro installed on a HP Pavilion 522c which has everything onboard (audio, NIC, USB, video, etc.). The only card is a PCI modem card which got autodetected and drivers loaded fine by XP Pro. Upon opening the Device Manager, I found the following: An category called Other Devices with the following items or entries: Ethernet Controller, Multimedia Audio Controller, Multimedia Audio Controller, SM Bus Controller, Video Controller (VGA Compatiable). To me, it looks like a situation in which the OS sees the devices but unsure how to load the drivers for this onboard stuff. Thanks guys.