I had the same "disabled" on 2 gpu's. Rebooted the system and it was gone..So the M40 rig puts out 4.2 mil ppd, but, the system hangs up every so often. I am certain it's a faulty 1900x. So it's cool, but is unreliable. Sadly the k80 rig just says "disabled " when I start fah. I Googled it, but there isn't much info out there.