Sony VGN-FW170J - Manual (Page 152)

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Troubleshooting
What should I do if I cannot play a disc properly on my computer?
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Make sure the disc is inserted into the optical disc drive with the label facing upward.
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Make sure the necessary program(s) is installed according to the manufacturer's instructions.
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If a disc is dirty or damaged, your computer will stop responding. Follow these steps:
1 Press the Ctrl + Alt + Delete keys and click the arrow next to the Shut down button and Restart to restart the computer.
2 Remove the disc from the optical disc drive.
3 Check the disc for dirt or damage. If you need to clean the disc, see On Handling Discs (page 120) for instructions.
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If you are playing a disc and cannot hear sound, do any of the following:
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The volume may have been turned off by the Fn + F2 keys. Press them once again.
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The volume may have been minimized by the VOL- button. Press the VOL+ button to turn up the volume loud enough
to hear sound.
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Right-click the volume icon on the taskbar and click Open Volume Mixer to check the settings.
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Check the volume setting in the audio mixer.
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If you are using external speakers, check the volume settings on the speakers and the connections between the
speakers and your computer.
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Make sure the correct driver software is installed. Follow these steps:
1 Click Start and Control Panel .
2 Click System and Maintenance .
3 Click System .