You say you had "the horse racing channel onto your tv" -- from what to what?
That channel has to come from some box, what is that box?
Your TV is what? How are the various pieces connected? What sort of cable, and if you are not sure what you have can you describe them?
I recently moved and had an HDMI cable hooked into my TV and desktop to stream the horse racing channel onto my TV.I can't seem to find the TV anymore..it used to come up as Samsung TV..I messed with the settings and now have two Dell monitors..one digital one analog..maybe the analog is the streaming?