Do a right-click onto the devices and look for details.EDIT: The "Unknown Device" probably is the ASUS ACPI device. The driver should be on the mainboard CD. If not, use the attached one. ASUS_ACPI.zip What about your Sound chip? This could be the "PCI Device". You will get the newest HDAudio drivers from Realtek. The PCI Device was 'JMicron JMB36X Controller", which installed from the CD. I didn't want to use the CD for anything since it may cause conflicts with your driver package. Hopefully this will work though. The 'Unknwn Device' is no longer there so I don't know what it was Thanks!