Computer won’t boot

May 11, 2018
22
0
10
Gigabyte gaz270p
GeForce gtx 1070
EVGA 650w
I7-7700
My pc works fine if I don’t have the gpu installed via onboard graphics, but when I plug in my gpu my computer boots with everything working then about 3 seconds later shuts down and reboots without the MB lights on and then there’s no display/no signal from my gpu or onboard graphics. The gpu is brand new. Any suggestions
 
I’ve also reseated it multiple times to ensure it’s connected correctly. I’ve also tried disable the onboard graphics on my device manager as well as in my bios