HI, my CD-RW stop working, or so I thought. It would recognize a disc but showed that it was blank and would not show any data on the disc. I thought it was just old and replaced it with an multiformat DVD writer. However, I still have the same problem. The device is working properly, and it can differentiate between a DVD and a CD but will not play or show data, and that the disc has zero free and zero used left. It can burn a CD but I cannot see the data afterward. Although I could have used the upgraded drive anyway, I still have the same problem.