I was watching a Netflix movie and it froze. After about 15 minutes, I unpluggted the power cord to the TIVO box and now I have a black and grey squiggly screen. I can tell it's the TIVO homescreen but it just stays this way. If I push the "Live TV" button, I an tell it's no longer TIVO but it's still the same black/grey sqiggley screen. So I have no TIVO and no cable TV. My internet is working. What happened? Help please!