Hi there,
I have the exact same issue with same CPU and an MSI 320M Gamer Pro board, full parts computer built (for my son) sitting on table faulty as can't flash the BIOS and will cost me a mint to return it to get the reseller to flash BIOS, or take it to a local IT shop to get ripped off to do it !!
My first AMD purchase......should have stuck with Intel.
How long did it take for them to send you a boot kit?