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I get no sound on my laptop pcg-7d2l, the headphone jack does not work either.

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First make sure you don't just have it muted... seems simple but its happens. Open the volume controls and make sure the mute is not checked. If that doesn't work, try removing the sound card drivers and reinstalling them after a reboot. If both the speakers and the headphones don't work its most likely the drivers, however there is a chance the sound card has gone bad as well. . . Try the driver reinstall and if that doesn't work you will need to have it serviced.

Posted on Jul 19, 2008

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