I used to use my pc with dual channel RAM, but one day it decided to boot with only single channel memory. I checked both memory sticks and memory slots individually and all of them work very well, I tried plugging the memory sticks in 1-3 or 2-4 and the pc still won't boot.
RAM: HyperX Fury 2133Mhz 8gb
HyperX Fury 2666Mhz 8gb (It's fine to mix different Mhz Rams because the system will run both at 2133Mhz)
Motherboard: gigabyte z270 hd3p
RAM: HyperX Fury 2133Mhz 8gb
HyperX Fury 2666Mhz 8gb (It's fine to mix different Mhz Rams because the system will run both at 2133Mhz)
Motherboard: gigabyte z270 hd3p