I and many other had the same problem after a update. Don't worry it's not your videocard. It might be too light but then it would just overheat your laptop and slowdown or make graphical errors. ( Playing this on a laptop /me scratches behind his ear ) The problem here most likely is your sound. Yeah weird but true there were many posts about this after that update. I just got my sucky mono speaker of and use normal ones now. Select a different sound output and it should be fixed.
If not scroll back in the forum and look for people with the same problems there are more explanetory answers listed ^^
Good luck !!