Hey Grum, sorry I didn't see your PM. Sadly I don't understand sound issues, maybe trying to re-install Direct X? If it's for specific games, then something's on the laptop making them incompatible.
Have you watched a YouTube to see if sound still works?
Try to delete Direct X, re-install the latest from here,
http://support.microsoft.com/kb/179113/en-AUAlso, try toggling between Direct X 9 and 11 in game, see if that changes anything.
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