I have asus p7h55-m mobo and 7(4+2+1) gigs of ram. But my mobo only recognize 3.5 gigs. In bios advance options there is a memory remap option. But if I enable it then windows don't boot. what can i do about it? I've already checked all of my ram kits, they are ok. I reseated them in all possible combinations. I re-install my os, previously was win 7 64bit, now win 8.1 64bit. Some people said that reseating the cpu help them solve such problem, I've also done that, but no luck. Now I'm really frustrated.