Problems with ASUS Prime Z270-AR

[hanskan]

Hi,

I'm building my 4th rig, 2nd with ASUS Prime Z270-AR and i ran to trouble which i can't find a solution to, hopefully someone can help me out.

Specs

mobo - ASUS Prime Z270-AR
GPU - 7*Asus Dual GTX1060 6GB
Win10 Prox64
1200W PSU

Yes, installed Win in UEFI and yes, above 4G is enabled.

For some reason, i can't make even 2 cards to work and they are connected directly to PCI-16

When i connected 6 with USB powered risers i got 2 of these errors, if i connected all 7 then won't boot at all. 

0,05ZEC to whoever gives me help/advice that actually works

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[topgeek]

I assume you updated your BIOS because you said you set 4G encoding and that's missing if you have an old version
Your bios date should be 3/17 or newer'ish?

Did you set the PCI's to Gen-2?   Two locations in that bios...

Don't worry about that PCI error in the device manager.  Both of my Asus Prime Z270's show the same thing but both rigs mine fine (one nvidia rig and one amd rig).

[Vann]

BBT uses that board alot in his builds. I would follow the setup walkthrough video for that board he produced.

https://www.youtube.com/watch?v=DR-FkpU2KfI

[hanskan]

I assume you updated your BIOS because you said you set 4G encoding and that's missing if you haven't   Your bios date should be 3/17 or newer'ish

Did you set the PCI's to Gen-2?   Two locations in that bios...

Don't worry about that PCI error in the device manager.  Both of my Asus Prime Z270's show the same thing but both rigs mine fine (one nvidia rig and one amd rig).

I did not. Will try that. My other rig is running 6 1080Ti-s with same mobo with no problems whatsoever and did not set bios to Gen2