Where'd my HD channels go?

So, I've been having this problem for a while now and it seems to have occurred after that hectic rain storm from a few weeks back, the hailstorm probably didn't help the matter much either. Anyway, all of my HD channels are gone; when I attempt to show the channels from System Setup > Display > Preferences, "Hide HD Channels" is selected and when I attempt to change it, well, that's the only available option. When I move down from that sections it's now grayed out.

Any help is greatly appreciated.