R9 290 crossfire setup

[rennaws]

I have two XFX R9 290s I'm trying to run in crossfire but Windows 8 will only detect one. One is reference and the other is the double dissipation version, I'm running them in a crosshair mobo with 1000w psu. All my experience with crossfire has been relatively good up until this point, I've never had only one card show up, just the normal driver issues. Swapping the cards around in the slots didn't work, what else could it be?

[helping]

What PSU?

• Obligatory power cycle and clear CMOS.
• Test one card at a time to confirm both are working 
• If you're not already, check Device Manager to see if it's showing up
• If both appear to work, alternate between the sets of cables that power each card to verify that all cables are properly connected and no faults are with the PSU
• Make sure you have the lanes on, some Asus boards allow you to turn the PCI lanes off
• Period-dot list thingy format added to allow following of instructions and processes to be simplified
• @helping posts are now 43.9% more concise 

[wng_kingsley7]

Uninstall the drivers for the card(s) reinstall and try again. It sounds pretty funny that Windows only detects a single R9 290 damn windows...Have you tried using a different software like gpu_z? to check for temperatures and if it's set into crossfire x since it doesn't need a crossfire x finger as there isn't a cutout for it. Also manually put them back into crossfire

[Flyguygamer]

Are both cards working?

[rennaws]

Both cards are working. I got Windows to recognize both of them, problem was the usb connector holding up the card from fully seating. Figured that out and now they are both showing up but I've come across a new problem to me: catalyst shows the second adapter as disabled. Windows shows them enabled with no hardware conflicts...any ideas on that one?

 

UPDATE: Booted into Windows 7 instead and it recognized the 2nd 290 but catalyst has it disabled there as well. I noticed in the hardware information tab it had the primary card running in 4x and the second card at only 2x (confirmed the same situation in windows 8 as well) - according to the manual they should both be 16x using slots 1 & 3...

[rennaws]

After enough swapping around it started working...