on the mb make sure the 4/8 pin cpu power plug is in all the way. most of the gpu power will come from this plug. make sure the mb has the newest bios to rule out a bug. use hardware info and the voltage readings in the bios. make sure the 12v rail is over 12v if it reading under 12v rma the power supply.
I checked the 12V rail in the BIOS and it reads as 12.384V. So maybe I should try to update the BIOS. I already tried reinstalling the GPU drivers and it came back again.