OK so I have a dvi port on my computer and an hdmi port on my tv. I purchased a dvi/hdmi cable on amazon to be able to use my tv as my screen. But to my disappointment I do not have any sound on the tv, only my my computer speakers are working. I have tried to disabled and disconnected devices under control panel as well as right click volume icon. The only thing that shows up at all is my speakers. I am not really savvy on computers and am not sure how to solve this. any help would be greatly appreciated.