Dual graphics card black screening and crashing

Omega013

Reputable
Sep 13, 2014
6
0
4,510
Ok so I've got my dedicated gaming rig up n running, sort of, installed system fine and all hardware, drivers and the bios flash for the mobo but I've got an issue, after I get past the windows is starting thing, you know the pretty animation during boot, everything goes black, no pictures no blinking light in the corner or cursor anywhere, if I get past this stage cuz I have before a few times I get some graphical glitching like technicolored lines and such through the regular graphics as well as flashing and sometimes red and blue verticle stripes covering the whole page. It'll boot fine on one card with the other not installed and I can still safe mode it but it won't work with two for some reason. I need help cuz I shelled out enough money to be happy n right now it's annoying me to no end. Please I really need your help. My build is as follows-
case: 750d
Os: windows 7 ultimate
Mobo: z87 sabertooth
Ram: 8gb corsair vengence
Psu: hx1000
Cpu: 4690k
Gpu: hd7970 gigabyte by 2
Storage: 750gb laptop drive
Other: 5 fan controller, 3x 140mm fans, razer tiamat 7. 1 headset, razer ouroborous mouse, razer deathstalker elite keyboard.
All help is appreciated cuz I really want this build up n running for obvious reasons
 

Omega013

Reputable
Sep 13, 2014
6
0
4,510
Tried that, swapped card slots, ran one in one and not the other, swapped ram slots thinking that's help, bled the psu, changed adapter cables, tested both cards and they're fine by them selves it's just together they don't won't to play