Hello there.
I have build heaps of RAID systems in my time and at times it can seem a bit frustrating.
here is what I do.
Download the Microsoft USB tool and get your OS install placed on a USB stick.
Now pull all the SATA devices.
Make sure your SSD that will form your RAID are in the correct Intel SATA ports.
With only the USB device fitted, and the two SSD for the OS power up your system.
Create your RAID array if needed and then save and exit.
F8 to select your OS install USB and let the system run.
That is it, I have never had to do more than that.
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