My Computer has a DVD drive and a CDRW drive working for some time. They quit reading at the same time. I replaced both drives and cables no luck, I upgraded the Motherboard and CPU to a faster (P4)cpu, they read once or twice and stopped, they no longer read. I am using Windows XP professional OS. The CDRW writes and I can read the files on another system, but I see no files when I look onn the one they were written on. they do not see data on disks I purchased either. I do not know what else to try. Thank You for your help Robert Bailey Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com