nunob. it runs XP on it. thanks for the link, but i checked it. nothing of any help. it has things for the BIOS and other things, but nothing for the CD drive. i've tried to uninstall and reinstall, but still didn't work. i'm beginning to think the lens is bad or something. i may have to get another one. that would mean dealing with the customer. yikes. well, thanks for the info all.