problem setting up Crossfire

[D7rkN1ghtmare]

I Built a gaming computer some time last Year for a friend and it worked great with no problems. the specs are listed below:

 

Intel I7 3770k @ 4.2 ghz

Asrock Z77 extreme 4

Gskill ripjaws ram 2x 4gb @1600

Diamond Amd Radeon hd 7870 ghz edition

 

I can go in more depth on the parts if needed, but recently he wanted to add a 2nd gpu to run crossfire with so we found the exact same card from the same brand and with the same amount of memory. we connected the cards with a crossfire bridge and made sure that they were evenly spaced for the motherboard. now here is the problem, we looked all over the amd catalyst control center and the crossfire option is not present anywhere, we then made sure both cards were detected and they were both in the windows device manager and listed as running properly. we have spent over 3 days troubleshooting, watching videos, and testing the cards separately and still can not find out why it wont work. any help would be greatly appreciated. 

 

[SubTract]

make sure that the second card is running at more than 2x PCI-E

In CCC expand Information then click hardware. collapse your primary adapter and expand disabled adapter (In crossfire it will say linked adapter) check the Maximum Bus setting row.

Crossfire will not work at less than 4X PCI-E

[D7rkN1ghtmare]

make sure that the second card is running at more than 2x PCI-E

In CCC expand Information then click hardware. collapse your primary adapter and expand disabled adapter (In crossfire it will say linked adapter) check the Maximum Bus setting row.

Crossfire will not work at less than 4X PCI-E

I looked at the settings and the bus speed of both cards anmd they both said that they were running at pci-e 3.0 8x. i also took some screenshots so you can see.

[D7rkN1ghtmare]

[SubTract]

Do you have another crossfire bridge? they are coming up as if there is no crossfire bridge detected.

 

It might also be worth re-seating the GPU's perhaps try different PCI-E slots.

[D7rkN1ghtmare]

Do you have another crossfire bridge? they are coming up as if there is no crossfire bridge detected.

 

It might also be worth re-seating the GPU's perhaps try different PCI-E slots.

my friend had the same problem with his last board before he accidentally broke it and bought a new one so i think they are seated fine but we have never tested a different crossfire bridge. i will tell him to buy another one and see how that goes, thx