I have the standard Direct TV box in my room but it won't let me watch anything and says Channel Not Purchased?

I have the standard Direct TV box in my room but it won't let me watch anything and says Channel Not Purchased in a blue box in the bottom right hand corner of the screen. And yes it was working before it just stopped working but the TV in the other room is still working so I don't know what to do. Any help or suggestions? I already unplugged it and plugged it back in, took out the card and pressed the reset button (multiple times) so none of that works.