DVD-RW not recognised, also`flagged` in Device Manager

Hi, I have a A21m IBM Thimkpad ,this is located on a IBM Docking Station which also has a seperate drive bay installed with a Pioneers DVD-RW DVRK08. These used to work well but since I uninstalled Nero 8 both have ceased to work,they will eject and light up as seem to be working but are both shown in Device Manager as unrecognised,I have uninstalled both in device manager but Windows doesnt seem to be able now to install them,even my windows XP Proff. disc doesnt start. What can I do now??:o


please try this: http://support.microsoft.com/kb/314060