As the MSI FM2-A85XA-G65 has a uEFI/BIOS firmware.
How to install Windows 64 bit on a uEFI/BIOS firmware:

UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Help Forums
or
UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with