Slimtype DVD Player disappeared from My Computer and Device Manager

For he past 3 days my Slimtype DVD player was not noticed by my laptop at all. Even worse, my device manager does not recognize the DVD drive even though the drive is in working order (i.e. it can still open and close). This drive has worked well enough for the past five years and has been working properly until I installed some updates from the Windows update center. But I don't which update(s) caused my DVD drive to disappear. So after numerous attempts to fix the problem through Microsoft's Fix It Service (Boo!) I decided to restore my computer to its factory settings (OS: Windows Vista 32-bit) hoping that would restore the functionality of my DVD Drive. Alas, that did not even work! The only remnant of my DVD's functionality with Windows a registry key :

HKEY_LOCAL_MACHINE/SYSTEM/ControlSet001/Control/DeviceClasses/{53f56308-b6bf-11d0-94f2-00a0c91efb8b}/##?#IDE#CdRomSlimtype_DVD_A__DS8A1H__________________WH66____#5&50caa7d&0&0.0.0#{53f56308-b6bf-11d0-94f2-00a0c91efb8b}

as shown by the following image but nowhere else. I have tried everything to fix this problem from the removing the upper filters and lower filters to reformatting my computer. Is their any other possible problem with my DVD?

Thank you