I have a desktop and a laptop. Both have identical configurations for Firefox, plugins, add-ons, versions, Windows 8.1 64-bit, permissions. Videos play just fine on my desktop. But the only difference is when I try to play a video on my laptop in the foxnews.com website in normal Firefox mode, videos don't play. If I go to other websites, they do. If I try to play the video in foxnews.com in safe mode, it plays also. If I try foxnews.com video with Firefox in normal mode and all plugins disabled, the video still doesn't play. I have the latest video graphics drivers. What is wrong and how do I fix it?