My brother-in-law's laptop (Gateway model W6501)stopped recognizing his Optiarc DVDRW AD7563A ATA device. The Device Manager says Code 19. I've looked for the exact driver to reinstall. I get lists of drivers to download, but none are the exact number. I've tried uninstalling the device and restarting it, but I get an error message that says the install failed. I downloaded bio firmware and it would still not show up. I would appreciate help. I'm not professional and know little. My B-in-L is broke and needs his computer.