Windows cannot start this divice (LG GSA-H73N)

[qanda]This question is published in the hardware section for the LG GSA-H73N. Click here to view full specs.[/qanda]i noticed my dvd drive wasnt working this past week. in device manager, there was an exclamation point next to its icon, and when i double clicked it, the troubleshooting box read: Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19) what do i do? it worked before, so what happened?