After a while, I just realized that my laptop's CD Drive had disappear from My Computer. I tried 'Add Hardware' from Control Panel, but this is what came up: 1. I selected 'Yes, I have already connected the hardware' 2. The first thing on the list is 'QSI DVD+-RW SDW-082', I naturally selected it, since it's my CD Drive 3. The current status is shown as: "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)" Anybody has an idea how to fix this? Thanks.