Windows 8 laptop Audio won't work via HDMI

bobwoco Posts 1 Registration date Friday January 23, 2015 Status Member Last seen January 23, 2015 - Jan 23, 2015 at 10:25 PM
Hello, I've been connecting my Lenovo U530 Touch Ideapad laptop to my friend's TV to watch various things that we can't get on the TV for several months now. Starting today, the audio from the laptop doesn't work on the TV. The display works fine, but the audio still plays from the laptop and not the TV. The only thing that I can think of that I've done recently is update my Nvidia drivers. Most solutions I've seen online involve switching the primary audio device to the HDMI, but it doesn't even show up as an option when I plug it in. I've also tried changing/updating my Nvidia drivers multiple times, but nothing has worked. Any help would be appreciated.

My graphics card is an Nvidia Geoforce 730M, and the drivers are now at version 344.65.