This message was posted on behalf of Intel Corporation
I reviewed the specifications of both motherboards and they are compatible with 4th gen processors; however, they need a BIOS update if they come with an older version.
B85M-G requires BIOS version 0904 or newer
B85M-E requires version 0805 or newer
Now, make sure you are using memories of DDR 1333 or 1600MHz. (test your system with 1 piece of memory).
I suggest you to contact Asus support and request assistance on how update the BIOS