... My first thought, and the shop concurs, is that I have a wonky power supply. The PS came from my old computer and is eight years old and perhaps isn't compatible with the new always-on motherboards...
I'll know more on Monday, possibly today if they can get the 650-Watt power supply from Guadalajara in time to install/test it.
tanstaafl.
I often chuckle at the huge numbers the PC enthusiast world banters about.
I presume the new power supply will be quite adequate for your computer, but somehow I doubt the entire machine uses even half that much power, even at peak load.