I have a sony model DDU-1621 i first bought this and it worked fine, then i built a new computer and installed in that and it recognizes the disk, but will play nothing, not sound not video, it's just blank. this was originally in a win Me box and now is in a Win Xp pro box, if the setup is critical then let me know and i can post the entire set up for both boxes. i can rip from my A-04 but the rip speeds aren't as fast and i'd like to be able to finish the ripping as quickly s possible. in anyt case any help that you guys can provide would be greatly appreciated