I have checked the hard drive in a PC. Both the WD Quick and Extended tests passed. The other morning with the room at 59 I turned the TV on. It was OK until I changed the channel. The screen froze. I unplugged the Tivo and I can't get past the welcome. I tried to run Kickstarts but I can't get there when I follow directions at weaknees.com. The fan and HD are running. I'm a a loss.