Hey so Im having an issue powering both of my msi gtx 970 gpus. They each require an 8 pin and a 6 pin to power them. From my psu im using 8 pin to 2 6+2 cords to power each of them. When I have one hooked up its fine. When they are both hooked up my psu will click upon powerup and then nothing. Each of the GPUs work fine on their own. Ive ruled out defective gpus and defictive pci ports. Each GPU is hooked up to its own place in the PSU and im using a corsair cs750m. I could really use some help and I cant really find anything online. Thanks!