Sony VAIO computer - Manual (Page 183)

i.LINK
Why isn't my i.LINK drive playing a CD or DVD properly?
 The i.LINK optical drive will not play a CD or DVD if the disc was inserted with the label facing down. Eject the CD or
DVD from the drive, and make sure the label is facing up.
 The disc may require a particular program that is not already installed on your computer. Install that program
according to the manufacturer's instructions.
 The DVD may not be compatible with the optical drive and a region code warning appears when you try to play it.
Make sure the region code listed on the DVD package is compatible with the drive.
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