This just started happening today. (I believe yesterday there was an automatic Windows 8.1 update when I shutdown - don't know if that is related.) Anyway, when I click on a VIMEO video - ANY VIMEO video - all i get is the video (picture) but no sound. If I go to that same link in Internet Explorer, the same VIMEO video and sound play perfectly. Videos from other sites, Youtube, etc. all work with no problems in either browser. Any simple solutions for this fix? I'm using a relatively new Dell XPS 8700 desktop with Windows 8.1.