I have a Tivo Bolt Model TCD849500 which I bought brand new 11 months ago. I got the lifetime service subscription at the time. Upon receiving the box, I immediately upgraded the 500 GB HD to a brand new WD Red 4 TB HD. Everything has been working great until a week ago when I started getting intermittent pixelization across all channels. Then yesterday, the device intermittently started to miss recording parts of a few programs. I became concerned about the HD at that point and today when I got up, there was no signal at all coming from the device and all of the lights on the front were flashing. I immediately replaced the HD with a brand new WD 2 TB hard drive and attempted to re-start the Tivo. When I first powered up the device with the new drive, I got a message saying “Preparing the service update. This may take up to an hour, possibly longer." After a few minutes, that message was replaced with the TIVO logo then the “almost there” message. For several minutes the Tivo kept alternating back and forth between the Tivo logo and the “almost there” message. Since this was getting me nowhere, I tried disconnected the power and rebooting the system. I got the same result with the alternating messages, regardless of how long I left the Tivo alone. I kept trying a succession of reboots with the same result and finally, on about the 7th try or so I got all lights flashing on the front of the box. I tried re-booting one more time and this time the box displayed the green light and it started guided setup. I went through guided setup, got the cablecard re-activated by Comcast and loaded up the box with the guide from the internet. I thought I was finally in business and had all of the box functions back except for the TV signal. Regardless of what channel I selected, I got a Tivo message saying “searching for signal” but it never found one. I contacted Comcast again and they could find no problem on their end. Suddenly, as I was troubleshooting this problem, the Tivo started displaying a “Tivo box has detected a serious error and is attempting to fix it. This will take about 3 hours”. I am only an hour into that process but I have little confidence that the problem will be corrected. So what have I got going on here? My research has shown that the “serious error” message applies to a HD failure but I have a brand new, top quality HD fresh out of the box on it now so there should be no HD problems. Is the box itself now dead? I’m not very impressed with Tivo’s reliability if it is. It’s less than a year old. Right now, it looks as if I am facing having to buy a new Tivo box and a new lifetime subscription since they don’t allow transferring a current subscription to a new box. Plus….I’ve now lost all of my recorded shows! I am not thrilled about signing up for a new Tivo box and subscription if it’s only going to last me 11 months and then lose all of my shows. Do I have any other options here? Is there anything I am missing? Is there any way to get this box going again? Thanks for any help anyone can offer. Updated at 10:46 pm - Title Message should say "serious problem" and not "serious error"