I have a sony cdrw/dvd CRX330E drive. I was able to burn audio cd's until recently. I had not burned cd's for like 3 months. When I try to burn them now it keeps showing write error. I used ashampoo burning studio 6, windows media player, and sonicrecord now. None of these softwares were able to burn the cd's. I tried lower writing speed, shut down all other programs, and even bought the cd brand that I was able to burn before. None of this has solved the problem. On ashampoo, it says a medium error has occured.