windows 10. MSI Z97 PC Mate. I purchased 4 (4 gb. ea.) DDR3 SDRAM Dual Channel Memory to load on this motherboard. any 2 of the 4 I install on DIMM 3 & 4 run the system fine. any time I plug any RAM in DIMM 1 and/or 2 the system will not even bring up the monitor. I'm wondering if the motherboard is bad, or am I missing some config or switch settings to activate DIMMs 1 & 2, or am I missing something with some Dual Channel options that's burning me. Any advice?