Woke up this morning and my 722 was acting up. No signal so I thought it was the weather as it rained last night. After awhile I notice that the 722 would keep trying to reboot or rest itself. I would hear it start to whirl up but nothing happened. This went on and on with nothing really happening, just the whirling noise. I left the house pretty much all day and got back this evening and I still have no TV. 722 is still trying to reboot or reset itself... or at least that's what it sounds like. I've unplugged, pressed the reset button, pulled out the card, talked nicely to the 722 and nothing works. Is it dead? If so, will I be charged for a replacement DVR?