Computer stops recognizing 2nd video card when Xfire enabled

[msdunkel]

I have an Asus X58 motherboard, a pair of ATI 5850 video cards, and a pair of monitors running DVI into the primary 5850 (extended desktop). When I am not running crossfire, my device manager sees 2 5850 cards as does the catalyst control center. I can select "enable crossfire" from the control center; however, when I did that my computer became unresponsive and I had to reboot. When I reboot the computer and click on the performance tab of the catalyst control center, the only option is "AMD Overdrive", the crossfire option is no longer there. The device manager only sees one card. The only way I can get my computer to recognize both cards again is to remove the Xfire cable from the 2 video cards.

Any ideas how to get Xfire to work?

 

[bobafetthotmail]

try to uninstall CCC and use ATI tray tools, as CCC is known to do these tricks on older cards.

 

[msdunkel]

TY for your reply. I'll keep that in mind for next time it acts up . Not sure if this was the problem or not, but there are 2 "keys" on the video cards, I moved the bridge to the other key and it now works. Regardless, I don't want to even fart near the machine out of fear it will stop working .