STILL NEED HELP
UPDATE: I have successfully switched to BIOS B and the system posts but now I am unable to run SLI on my two GTX 970's. My computer recognizes both cards are installed but in the nVidia control panel the SLI setting to "maximize 3D performance" is greyed out. Everything before failure worked OK.
I have found some information on restoring my BIOS A chip using a flash drive and copying my BIOS B file.
My question is would there be anything which should stop me from being able to run SLI on BIOS B and/or would restoring BIOS possibly fix all of this? I am trying to figure out if I should and/or will have to try to RMA the mobo or not.
I have filled out a tech support ticket but MSI hasn't replied to my numerous requests in over a month. Not impressed at all with them so far...