Dear friend, I have a X99 -Pro motherboard, i7-5820k intel cpu, corsair LPX VENGANCE 2800Mhx Memory, EVGA NVIDIA GEFORCE GTX 750Ti. Everything was ok, until I was trying to set the memory frecuency to 2800Mhz. I received code error 53 (Memory Speed and compatibilty) on the motherboard and the mother board did not boot. I lef only the cpu on the motherboard and was trying to recover the BIOS with flashback mode, but I was not successfull. Please, what can I do??? help me