Audio for the sylvania smartbook synet07526 is not working?
Go in to Device Manager under Control Panel ' Administrative Tools ' Computer Management and see if there is a yellow bang next to the sound card. If so, try reinstalling the driver. If this does not solve the problem there may be a problem with the connector.
If there is not a yellow band next to the sound card, there could be a Windows setting that has the volume turned all the way down.
Or, try connecting head phones to the headphone ports to see if you hear sounds.
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