Can't get crossfire to work

[Turgish]

Hello.

i have two of these graphic cards : XFX Radeon HD 6950 2GB GDDR50 (i would post a link but i can't becuse of this is my first post)

but i can't seem to get them to run together. I am running a win7 professional 64bit system, could really need some help.

Thanks in advance

[tielknight]

Post the rest of your system's specifications and if you use a crossfire bridge or not.

[Turgish]

By bridge do you mean that cable that connect's the 2 cards ? If so then yes.

MSI Z68A-GD65 (Gen3), Socket-1155, ATX, Z68, DDR3, 2xPCIe(3.0)x16, CFX&SLI, SATA 6Gb/s, USB3.0, VGA, DVI, HDMI, EFI

Corsair Vengeance™ DDR3 1600MHz 16GB CL9, Kit w/4x 4GB XMS3 modules, CL9-9-9-24, 1.5V, Vengeance Heatspreader, 240 pin

Intel® Core™ i7-2600K Processor, Socket-LGA1155, Quad Core, 3.4Ghz, 8MB, 95W

Run a 1200w power supply