Indeed this is strange. When you switch out the DFI to ASUS is the only variable the motherboard?
Originally Posted by MatiasOC-S
If possible, try to use all of the same working components (Power Supply, Video Card, even sata cables)
At this point, I'm not sure what the issue could be.
I know we touched on AHCI earlier, but for the heck of it can you see if IDE helps get it to recognize more consistently?
Finally, can you try flashing the drive to our latest 5.0.1 firmware to see if this helps?