Update:
Good progress on the OS side.
Did a fresh install of Windows 10 with no gpu installed and then proceeded to install, boot and shutdown all gpus one by one.
Now I have all 6 cards showing up in Device manager and hashrate is 22-24Mh/s.
So these cards BIOS havent been modded and that has been confirmed without installing the patcher.
Now last problem.
MSI afterburner is not working and wont let me adjust settings. infact it isnt showing anything.
What gives?
How can I adjust fan settings and core memory clocks.
Many many thanks to those who have helped my troubleshoot till this point.
Much appreciated.