If your use the VGA port then you will need to add an audio cable to get sound on the TV.
You can get a USB video card like this one http/www.amazon.com/StarTech-com-External-1920x1080-Graphics-USB32HDE/dp/B00612ZPQA
or this one
http/www.tripplite.com/usb-2.0-to-hdmi-multi-monitor-video-graphics-card-adapter-128mb-sdram-1080p~U244001HDMIR/
If your use the VGA port then you will need to add an audio cable to get sound on the TV.
You can get a USB video card like this one http/www.amazon.com/StarTech-com-External-1920x1080-Graphics-USB32HDE/dp/B00612ZPQA
or this one
http/www.tripplite.com/usb-2.0-to-hdmi-multi-monitor-video-graphics-card-adapter-128mb-sdram-1080p~U244001HDMIR/