Ok so basically , My ram's rated speed is 2666MHZ , Its running at base clock now which is 2400MHZ , My motherboard supports 2666Mhz i made sure of that , My pc couldn't boot up because of memory failure when i changed from 2400Mhz to 2666Mhz , Why is that? I only had my pc for a month by the way and i dont know much about pcs