There are a few possibilities why that happened none of them having to do with the CPU's integrated memory controller at least not at those frequencies, one of your motherboard's memory slots could have been busted if you say it was fine when you removed one module and the memory worked fine in your friend's pc or one of the settings in the bios was incorrect regarding timings,multiplier,whatever or simply the motherboard wasn't compatible with them or the size since you didn't specify how much. You shouldn't have any problems at all with the maximus iii if the memory you are after is on the support list.