So I was using a GTX 660ti and thought I would splurge, raided the penny jar and picked up a GTX 1070. When I plugged it up....nothing. Here are the deets on my system:

Intel i7-3820 @ 3.60
Ram 16 GB
64 Bit
PCU 800W
Using PCIE x16 slot on motherboard (Tried all slots actually)

It's getting power and I get the system intro screen (Basically the computer system advertisement upon boot up) but after that nothing. I don't even hear the computer processing like it's starting up. Works great when I plug up the 660ti but nothing with the 1070. Any thoughts guys? Am I missing a setting?