I recently bought a new matched set of G-Skill F3-17000CL9Q-16GBZH and when I first powered up the machine everything worked with XMP 1.3 profile on first boot. When I rebooted the machine I received the error code "45" and now I can get 8GB working in Single Channel with slots B1/B2 but as soon as I put anything into A1/A2 I get the error "45". I am using the latest BIOS FYI. Is this a motherboard issue or memory issue?