Why my videos (youtube, facebook) have no sound?

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  After updating my Browser (FIREFOX) and (Adobe Flash Player), the videos in my laptop have no sound.  This is happening everywhere, e.g.  YouTube, Facebook, etc.   I have an ASPIRE/S5 with WINDOWS 7.  Please tell me what to do to correct it.   With advanced thanks.

  Maria M. Maduro

  hkmmm@yahoo.com

  Friday, March 31, 2017 9:48 AM