did you turn it off?
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?