I purchased an Asus Z10PA-D8 and received a B7 error. I then called Asus tech support and they ruled that the board was bad. I purchased a second Asus Z10PA-D8 and now I am receiving a B7 error again. I then called Asus tech support again and they ruled that this board was bad. I find that highly odd but possible. I have tried two different PSUs, two different processors, and three different RAM sticks from different vendors and sizes. All processors and RAM are on the QVL. I tried using the Crashfree Bios updater but the USB doesn't initialize yet in the boot cycle. I also reset the ME and receive the same result. Anyone else have any ideas?