text: I am assuming you mean system > hardware > device manager > CD ROM drives?\n\nIt is possible that the driver got corrupted.  The easiest thing to do is to right click and uninstall the CD ROM.  If you uninstall andclose out you should shortly see "new hardware found" with the name of the CD that you have.  If this DOES NOT happen then you probably have a physical problem with the drive.  If it does, then it reinstalls and you can see if it works.\n\nAlso, check to see it the drive LED goes on when you insert a disk (getting power), does it open and close when you press the button? \n\nIf that does not work (assuming you have not made any other changes/additions to the hardware since it was last working) open up the computer (after diconnecting all power of course) and check to see if the cables are securly connected.\n\nOther things to try if it has power and appears to be visually working - change the ribbon cable. Make sure it is jumpered correctly.  Try setting it up on the second controller (there could be a problem with the controller card).  Try connecting a different power cable to the CD.\n\nAfter going through this "ttask" list and you are still failing then I am about 90% sure your drive is bad.\n\nIs it still under warranty?