I looked through the forum but did not see this problem exactly. I haven't used my Roamio over the summer and got it out for the new Fall season on the ota. Here is the problem. 1)It is continuously rebooting when I watch a recorded show while recording another. 2)It reboots when I first turn it on. I can watch live TV when it is not recording. I can watch a recording when it is not recording. I am assuming that getting a external HD wont help, what can I do? It is well ventilated.