CD/DVD drive disappeared
CD/DVD drive disappeared without a trace and will not read a disk, even when I insert one. This is most likely a software related issue, but as a first step, ensure the drive is still recognized at the hardware level by restarting the system and entering BIOS. Ensure the DVD drive is recognized as one of the attached storage devices. If the hardware is not recognized and your particular model of system has a removable DVD drive (an ultrabay or equivalent) try to remove and reinstall the drive to ensure a good connection is made. If the drive is still not recognized in BIOS, please contact service.