Hi,

At one point I had 3 out of 4 cards detected by my device manager and cgminer. Now only slots 1 and 5 are detected and no matter how I configure the rig the mobo will not detect any other cards. I even attempted to reset the CMOS, clear all amd drivers and sdk. Reinstall app sdk 2.9 and amd driver 13.11 beta to support the 280x. The cards that are detected are being detected as the right hardware so I know the drivers are fine. My powered risers(1x-16x) are all working and my psu(two corsair 750w w/add2psu) plugs are all connected.

WHAT AM I MISSING?

Running on windows 8.1, which I do not think would cause any issues. I have read that others have used this mobo successfully without the need to short the A1-B17 on the mobo pcie slots.

I’m going crazy trying to configure this thing to run properly.

If all else fails, RMA. What other Mobo would you suggest and am I missing a step somewhere to get this running properly?