what are your fans set to?
if set to auto when it powered back up it could have toasted.
They are underclocked so the fans aren't at 100%. Can't remember exactly, I can't log into them. I didn't turn them off for a while, so they came back on after the power reset but the internet wasn't on. I reset the internet, it should be on out there with them, but they don't seem to be connecting.
On this I would bring a laptop and test internet there. I had a hub that was giving out and started to cause random outages. If internet though the machines should beep if working right but I would still test internet and not assume. That hub was quickly replaced once I figured out it was it.
Also I would test PSU's if you are able to. I use one close to - https://www.amazon.com/Thermaltake-Automated-Supply-Oversized-Supplies/dp/B005F778JO/ which does a great job when if I need to test PSU's. I know you might not have one on hand though. In morning when you test just curious is PSU fan spinning?