ross, thanks my usb drive being seen as unknown device is now fixed. As you said, I added the usb-disableselectsuspend-key, set it to 1, rebooted the computer - still no action. Then in device manager, I deleted all the USB root hubs then the controllers, and then asked for a scan for hardware changes. The mp3 and USB drive now work ok. Now just have to find the installation disks for all the software I just uninstalled.