Will do. I’d not disconnect quite that many things. :-)
If the green power LED on the MoBo is lit, is the PS likely ok? Put another way, does it monitor all PS rails (at least as of where they hit the MoBo?
I must admit, I’ve never been “in” a home pc with a 850 watt power supply!
The green light does not mean that all of the power supply voltages are OK. But did you ever check them?