hello,
this is my first post and sorry for this but i am a noob here in mining world. As per right now i am building a 5x RX570 1x RX 580 in windows 7 ultimate 64 bit. Has anyone tried this bios mod on newer catalyst? say like 17.4.4 or 17.6.2? i've tried it and still got no luck. my rig can only detect 4 gpu and the other 2 has code 43 on the device manager. i've set virtual memory to 16gb but still no luck.
Can anyone enlight me? thx

Mobo ASrock H81 pro btc v2.0
GPU Sapphire pulse rx580, sapphire nitro 570x5
RAM 8GB corsair
PSU EVGA 750+650 watt (with relay on)
Windows 7 64 bit