I know this is a fairly common topic here but I just didn't know which topic I should possibly piggyback off of so I just started a new one. If there is a specific topic that a mod feels this belongs in feel free to merge it with that one. So a few weeks ago I started noticing one of my S3's started rebooting daily. Having changed out a bad power supply on another one my first thought was to see if this one was going bad. I take it apart and blow out all the dust and check out the caps. Visually they look fine. No bulges, leaking or anything, not even the slightest bit. I put it all back together and think maybe it was just all the dust(it was pretty loaded with it) and carry on. All is good for the day and I watch a good 6 hours of programming with no hiccups or anything. Now here's where I start to wonder. The next morning I notice it's around 6am and I see the S3 reboot as all the lights on the display are on. A few minutes later and I see the clock. I switch over and see it sitting on an HD channel. I decide to put the box on a few SD channels and let it go. I move a few menus around so they're not at the default "top" spot and then leave for the day. I get home and check the box and everything is still as it was when I left it other than the channels as it recorded a few shows in prime time. I spend some time watching them and again no issues with the recordings. No pauses, stuttering, etc which wouldn't make me think I have a bad drive. I go to bed and again the next morning it's around 6am again and the box once again reboots. After it's up and running I check the channels and once again it's on HD channels. This repeats for a few days. Time for more simple troubleshooting I figure. I move almost all season passes that are for HD channels to another box and delete them from this one. Now it's only recording a single HD show(which I couldn't move due to multiple tuner conflicts but doesn't record for a few days out so I figure I can still test) and a few SD shows. I put the box on SD channels once again and leave it alone. No recordings scheduled on the box for this day/night. The box stays on SD channels. Once again all is good until the next morning. Around 6:30 it reboots yet again. It seems that something is triggering a reboot in the mornings as they always seem to happen between 6-7am and it's not related to the HD channels which I was thinking prior. Now this morning I had what I thought was the bad drive signal because it started to reboot loop. It would get to the "almost there" screen and right as that was going away I was back at "welcome" again. However after 3 times of doing this it started up like normal and has been fine since. Again, no menu issues, no stuttering, etc. So where would be a good place to start with this? Should I run a specific Kickstart? Could the power supply still be bad despite visually looking fine? On the box that has the replaced PS the caps were visually swollen on the tops which is why I ask. Can you actually have a bad drive even with no pausing/stuttering issues? I ask because in the dozen or so boxes I've had through the years every bad drive I'd encountered had those symptoms so I just never experienced anything but those. Can it be some weird cable card thing? Whenever I check the signal levels on the box they're never really low(most are in the 80-90's range with the remainder being 60-70's) so I'm a bit lost on what to look for. What would cause the box to reboot every morning at around the same time? Is that just a big coincidence? Sorry about the length of this along with the mass amount of questions at the end. I'm just trying to think of anything and everything. And just to add since I didn't mention it above, the drive is an upgraded 1TB drive. No eSATA connected drive. The box is also plugged into a UPS.