I know it sounds obvious but have you found the mute button and clicked on it---it had me going for a while with my new computer until I clicked on the loudspeaker icon.

cause if it isn't I've known a solution to a problem of no sound through driver re-installation. I mathe directions were pretty easy to follow http://annoyances-resolved.blogspot....em-solved.html tell us back what happened

you were watching a video on how to make money on the net ,how ironic ,annoyance blog is full of adds ,are they how you make your money on the net,or no wait the blog site owner is making the money you are just an assistant