CrossfireX 2xHD6990 - Only 1 card working - Help me!

Dhiego Rosa

Honorable
Aug 26, 2013
2
0
10,510
Hi guys, sorry about my bad english =D

Iam having a problem with my crossfire using HD6990.

I have 2 card, HIS and Sapphire HD6690 and my MB is GA-p67a-ud4. My PSU is thermaltake 1200w and i have an i7 2600.

Two months ago, i did crossfire using HIS HD6990 and Sapphire HD6970, it worked fine, but now it only recognizes one card and not both.

I did many things that i read here. Ive formatted my computer, ive changed the CCC version (using 13.1 now), i tried 13.4 and 13.8 beta, neither worked.

The 2 card is working fine separately. Ive tested both cards and its ok.. My bridge cable is also ok.

Does anybody know where the problem is? Please Help me!

Thanks!