???

So, after narrowing down my problems to NOT the power supply, probably NOT the motherboard, etc. etc etc., I was reduced to fiddling with 999 options in the bios.
None really mattered...what was for sure was somewhere in my case something was shorting any power supply that I used.

This goes on, and then, on a whim, I switch keyboards.
And for some reason, it works...so far.
We'll see how it goes, but I'm cautiously optimistic.

Oh yeah, THIS is sort of funny.
Seems like Japan is the land of unsecured cameras.