Hello all, My machine is running XP professional. My problem is about the CD/DVD drive. In normal state, when it's empty, it can be opened and closed just as normal. But for most of the CDes or DVDes, one problem will occur. The problem is, first that CD or DVD will not be read/recognized. Then the CD/DVD drive is no longer available in my computer window like that is not recognized as well. And also in deice manage's list, there isn't any CD/DVD drive item! In those situations, every time I need to restart the PC one or several times and try to eject the cd drive and put out that CD/DVD and start the machine again. Then the CD drive will return again! How to fix that problem please?