The registry key UpperFilters was not present, and after deleting LowerFilters, it was not restored upon restarting the computer.
I took a quick look at Device Manager, but I did not see it listed in the hardware peripherals on the system.
The CD/DVD is LG, and it is getting quite aged, is the only remaining possibility a broken drive? It does open, and upon closing, it does have the read light activate.
Thank you for your assistance.
Edited by wm_hunter, 09 June 2008 - 05:52 PM.