Try this solution to your problem.
Look for the speaker icon on your desktop in the right bottom portion of the sceen.
Also when you find it, RIGHT click on it, you will have two choices to make, choose and check each one of the choices to make sure that NONE of the boxes on each
choice has a checkmark in Mute,if there is a check mark then uncheck it.
NOTE:In "Open Volume control: you will find slider to adjust for volume,Wave,CD Player,etc.
After that is down, then LEFT click on the speaker icon and make sure that the slider is all the way to the top and that the Mute does not have a check mark,if it does remove the check.
If that does not work then re-install the audio driver for your computer.
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Audio driver for Aspire 3680: