Picture but no sound

I have a WD live and I connected a WD My Book Essential 2T to it and it worked fine until I did the last upgrade. I was watching a movie that I didn’t complete on the new upgraded and I shut everything down and later turned everything on and I only got a picture but no sound.  If anybody has any suggestions or solutions I thank you in advance for your help. Thanks Wader

Hello,

This issue happens with all your files? Have you try resetting the device?

http://wdc.custhelp.com/app/answers/detail/a_id/3646/session/L3RpbWUvMTMwMDgwNjM4MC9zaWQvNUo2WVh6cGs%3D