I'm not with Laminar Research, just a fellow simmer in the UK.
As I am also a qualified computer technician who builds his own desktops, I would have to say that power supply units do not normally fail in the way reported through the simple use of software, any software!
I ran X-Plane 11 with a 650W PSU for a long time and had no such problems whatsoever.
I would venture to suggest that there must be a fault with the internal 12v side of the PC (short circuit etc.) or an external power supply problem and would therefore start any investigation there first, before worrying about software.