When is the last time you removed pxoc?? Have you uninstalled it and deleted the evga folder before reinstalling?
Also the pic in pxoc. The voltage slider is at the min. And the 3 fan icons above the slider are not all blue. So only the gpu is set for auto. Also the osd is not turned on so you can watch the clocks and voltage?
Anyways.. crazy issue and I'm betting evga will again point to your new pc.
Have you tried another pci-e slot??
Pci-e power control is turned off under windows power management?
How about the z97 pc? You did test in that before with the other card.. did you test it with this one?
Would be great if you could test this card in another system.. pc tech shop even.
I'd be looking hard for proof it's not the pc and it's the card.