Strange issue with 960 evo raid on asus z270h

[Changis]

Specs are in signature

i have 2 960 evo m.2 drives that ran fine in raid-0 for the last few months on a company provided win 10 VL license. i found a win 7 pro licence that i decided to use on my build to get windows 10 pro with the accessability update so i could tie the licence to my account, by installing 7 on a seperate ssd and dualbooting until the key was registerred and i could reinstall my original windows 10 with the new key.
so i enable and disable legacy mode in bios as i continue to reboot back and forth between the installation and win 10 to download and try different drivers, until i find a tool asus made for this that modifies the windows 7 installation iso to include the correct drivers. i manage to install windows 7 without a hitch, but find that i need lan drivers to download the rest of the drivers.. so i try to restart back into windows 10, only now it fails, i check my raid config and see that nvme disk 2 is missing.. (i have not done anything to the hardware)
long story short, after a while of troubleshooting, the issue is as follows:

 

1. when uefi storage drivers is enabled, M2 is missing.
2. IRST only detects M1 (IRST is the raid software for setting up nvme raid)
3. uefi storage drivers must be enabled for raid to work.
4. with legacy only drivers, both M1 and M2 shows up.
5. raid is unavailable in legacy only drivers mode.
6. this worked fine before i installed windows 7, no hardware has changed.
7. in uefi mode, bios now shows windows boot manager from M1 as first boot option, this should show the raid array instead of M1.

 

i have tried loading bios defaults, with no difference to results below. i also have the newest bios flashed before this without issue.

i have no issue rebuilding the raid array, but i can't get M2 to detect with raid enabled

 

any suggestions would be appreceated

[Changis]

i am a giddy goat  it was detected, but M2 somehow got disconnected from the array, so i removed raid from M1 and could then make a new array with both M1 and M2

sorry