I was looking at some other gaming sites and there are other games that had that problem with the onboard sound but no solution was given except to get the drivers from your MB maker and update and/or flash the bios.
I would highly recommend never using onboard video or sound for gaming. If it's a new rig it might be possible to get your seller to upgrade to a regular soundcard for little cost. (You can also tell them some programs won't run sound with the system as-is).
Good luck to you, hope you get it worked out one way or the other.
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Thanks Fiery,
I wish it that simple.......being a notebook though.....onboard sound and video is all it can ever have. Never mind.