Hello! First and foremost, the motherboard I'm using is the Asus - B75M-A Micro ATX LGA1155. I noticed one of RAM sticks failed recently, and I decided to use the healthy one to test the slot the dead RAM was in to make sure the slot was okay. The computer acted like there was no RAM in it when I turned it back on (that good old, classic blank and black screen). The motherboard only has two slots, so this is detrimental to me, being a PC gamer. That being said, is it possible the motherboard just requires that I use the slot closest to the CPU if there aren't two sticks being used? I just want to make sure that the slot is dead before I spend money.