I have an Alienware laptop with Windows 10 recently installed and I have a Sony TV. When I connect my HDMI chord the picture transfers (and is beautiful) but the sound only plays through my laptop speakers. I have tried lots of fixes that I have read in other threads with no luck. I will however be willing to try it all again. I do not know if it was working before I installed Windows 10 as I cannot remember if I ever used it for this purpose before. I believe I have but cannot remember for sure. Any ides would be much appreciated