Hi ken-Intel,
So I got a new PSU today. First I tested to start the server without any drives, just to make sure this PSU was working as expected, and it did. No Minimum Load Protection going in and overall voltage output from the PSU is just a notch higher than the faulty one.
So I proceeded by plugging in the 530 SSD and tried to install WS 2012 again, but I had no luck with it. Exactly the same behavior as before. The SSD isn't showing up in the WS installer and after exiting the installer the drive is gone from the system and Bios can't see it anymore.
Have you got your hands on a C2750D4I yet?
Help me Intel, you're my only hope!