I have the sama problem! It says: Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39) in device manager. Optiarc DVD RW AD-7530A ATA device is missing. I have acer aspire 7000, only like 6 months old... After that Otiarc ****, the DVD device doesn`t work. It opens and so on, but after that-it`s just silence, it doesn`t do anything!