Corsair HX1000i, has plenty, total system power draw with 6gpus is 476W

I have the newest bios, there isnt option for PCIe or SATA, i know how it looks like, i´ve done it on Z270 Prime, on B250F just isnt there. I just ordered splitter which should do the trick https://www.amazon.com/Optimal-Shop-External-Multiplier-Card-Ethereum/dp/B07376F3CK/ref=sr_1_1_sspa?s=electronics&ie=UTF8&qid=1514334794&sr=1-1-spons&keywords=pcie+pci-e+pci+express+1x+1+t3&psc=1

I did not manage to fix the problem, i was going to give 1 zen to the one who would help me solve it, change slot didnt help, thanks for help anyway.

can you send me photo of your bios settings? I set pcie to Gen1 and 4g decoding, also on onboard devices i set it to X2, i tried both ports and still not working.

Yes i have tested M2 riser individualy, they are working, also GPUs, for example, when i have 2 gpus instaled and connected to pcie slots everything is working and is fine, if i swap one to M2 pcie only 1 is showing up.
I have only classic 2.5 SSD connected. The thing is i cant realy change the option for the M2 slots to be Pcie

Hello there folks, recently i bought an ASUS B250F and i wanted to build 7 GPU mining rig with 1060s, however im only able to connect 6 gpus, i was planning to put 7th into the M2 slot (PCI-e 4x v. 2.0 -> NGFF M.2) but when i put GPU into it, it doesnt work, gpu just isnt there, neither cant set it in bios, can only set it to X2 or X4, i dont see the option in bios for M2 if it has to be SATA or PCie. Any help or suggestions?
I only set in bios pcie speed to Gen1 (all of em) and enabled 4G.