I suggest you try to remove the old CD drivers, then find the drivers for the current CD drive being used and then install those. You may need to take out the current CD drive in order to know what model# it is to fetch the drivers in order to install it.
We've recently aquired a used CD Burner (Philips) and replaced the old burner in the Dell. When we boot, the tray will open and when we go to the setup menu, the drive is "Unknown". Any suggestions as to what the problem could be? Thanks for the help.