Yesterday my R15 wouldn't start up. The yellow record light was on but the blue ring or the other lights wouldn't come on. It wouldn't respond to the remote or pushing the actual buttons on the dvr. I unplugged it and plugged it back and it would go to the start up screen then the "checking disk, may take up to 30mins" screen came up and then it would go black. I unplugged and plugged it back several times and eventually the hard drive booted up and I was able to watch my shows and whatnot. Queue today. It's once again dead but the yellow record light is on. It's non responsive to anything. I plug it in and out. When I do, it sounds like just as the HD is about to boot up and all the lights come on, it goes dead, and then starts up and goes dead. It cycles forever until I unplug it.