I had also the same problem. But with me the cpu could not reconize the whole rig.
I had a custom bios. The hardware works perfect by me. Its was the driver. Reinstall the driver en patched them.
Perhabs thats works for you ?
Thanks. I'm able to resolve the problem you describe by running AtiDagPatcher. But in my case 1 or 2 of the 560's will not be detected during post, so even before Windows / Drivers load up. I'm using ASUS B250 Mining Expert motherboard, and it shows PCI-E slot detection during POST.
Were you using a mix of 570s & 560s like me as well?