Please help - no video

[BitCoinPokerBro]

Pc starts up and windows makes normal windows 7 startup sounds but the gpu is not providing a video feed.  It's not the cable because it works with my current card.

Currently working - 1 saphire 6870

Not working -2 referance xfx 6970's  (tested 1 at a time neither work)

MB - http://www.amazon.com/gp/product/B00CBFPZDO/ref=oh_details_o02_s01_i01?ie=UTF8&psc=1

PSU - http://www.amazon.com/gp/product/B00CGY4ETG/ref=oh_details_o02_s01_i02?ie=UTF8&psc=1

No these are not affiliate links.

Any ideas?