@ The LastHero
Welcome:). Have you tried deleting/uninstalling the IDE controller for the 832 in 'device manager' and rebooting to let windows reinstall the drivers and redetect the burner?
For the external unit, you can try a similar thing...uninstall the USB controller in 'device manager'(with the drive disconnected) and reboot, letting windows reinstall the drivers. THEN, plug your external USB drive and let windows find it.
If that fails, try to go to 'add hardware' in the control panel and find your drives.