The most common cause is the corrupted driver. Open the Device Manager and see if there is a warning sign under the CD/DVD-ROM drives branch. If yes, uninstall and reinstall the driver.

Apple has issued a patent application for an adapter to convert mini CD/DVD-ROMs to standard 12 cm size for use in slot-loading drives found on many of Apple's computer models. Apple points out ...

Most optical drives today are combo CD/DVD drives that support DVDs and all the CD formats: CD audio, CD-ROM, CD-R and CD-RW. The speeds of the drives are rated by their CD-ROM and DVD transfer rates.

We will explain this procedure below. ASPI is an acronym for Advanced SCSI Programming Interface. ASPI drivers are the interface between software and hardware (CD/DVD-ROM readers and writers).