Sony PCG-GRX560 - Manual (Page 161)

My optical disc drive is not playing my CD or DVD properly.
 Check that the label of the disc is facing up.
 If the disc requires software, check that the software is installed according to the manufacturer's instructions.
 A dirty or damaged disc may cause the notebook to stop responding while it tries to read the disc. If necessary,
restart the notebook, remove the disc, and then check it for dirt or damage.
 If you see video but can not hear audio, check all of the following:
 Check that your optical drive does not have the mute setting enabled.
 Check the volume setting in the audio mixer.
 If you are using external speakers, check the volume settings, and then check the connections between
your external speakers and the notebook.
1. Click Start, Control Panel, System, and then Device Manager. Check that the correct drivers are
installed properly.
 Do not use adhesive labels to identify the CD. The label may come off while the disc is in use in the optical drive and
cause the drive to malfunction.
 If a region code warning appears when you try to use your optical drive, it may be that the DVD you are trying to
play is incompatible with the optical drive. Check the region code listing on the DVD packaging.
 Condensation may cause the notebook to malfunction. If this occurs, do not use it for at least one hour.
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