I bought a new power supply because I kept getting random crashes with my old cx600m green label pay. I bout the new evga supernova 650ga. I finally got around to installing, got everything all hooked up flip the switch on the back and press the power button on the front of the case and nothing but a split second of power to the fans, you have to flip the switch on the PSU off and on again to even get that split second of power again. Now just for giggles I plugged the old pay back in just laying in the case and the computer fired right up. Does this mean the new psu I got it junk?