HELPROOM ANSWER Disconnect your headphones and speakers from the ?laptops, then visit Control Panel, Sound. Select the Playback tab and check that your preferred sound output is selected as the default device. If it isn't, highlight the preferred option and click 'Set Default'.
Next, select the Properties tab. Ensure the volume is set at an audible level under 'Levels'. Next, on the Enhancements tab, ensure no options are selected.
On the Advanced tab, for testing sake, reduce the 'Default Format' audio quality rate to '16 Bit (CD Quality)'. Click the 'Test' button. If you can hear sound, test the next setting (DVD Quality). If this also works, leave this setting selected.
If you still can't hear any sound, try using the Sony drivers for your device and updating the Bios. If this fails, you may have a problem with the speakers and should return the laptop to Sony for repair if it has a valid warranty.
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