Gateway laptop purchased in 2008, Windows Vista, home premium.
Disk Drive DVD Multi Recorder RW DVD + R DL, Model AD-7563A dated August 11, 2008. My computer identifies it as a Optiarc AD 7563A cd rom-rom device.
Updated SP! to SP2 about the time Problems developed, but do not know if this was the cause of the problem. Dvd recorder wold read and write to most disks before problem developed. It will now only read cd-r disks. This is a major problem because my backup disks are CD-RW80 and/or DVD+RW disks .