I recently installed a GT 630 video card in my computer. This is a custom built computer. I have it hooked up to a 27" LCD TV by HDMI. Is there a way to get sound to my TV by this HDMI?
Yea you can do that. Just go to Audio playback devices in windows and set the Nvidia High Definition audio device with a TV logo next to it as default source. Currently i suspect it is set to speakers for your motherboard.
Go to Nvidia.com and download and install the driver for your graphics card model. You're most likely using what Windows installed and Windows doesn't install the audio components, only video.