Once I open Movie Maker, it has no sound and shuts down all other sound on my laptop. I recorded a "webcam video" right out of Movie Maker and even went to Youtube and it won't play sound off there.  I can restart my laptop and it resets it to work fine everywhere else, but Movie Maker kills it everywhere once it is opened.  I recently upgraded to Windows 10, but had this problem with 8.1 and upgrading didn't fix it. Ideas?