Hello! I've been searching for answers on what happened to my pc. After I manually set my ram speed to 2666 (which is my ram's exact speed) after I clicked (save and reboot) it exited bios and my pc won't boot up but the cpu is still on. I really hope someone can help me with this, Before doing this my pc ran perfectly, I was just trying to maximize my ram usage and that's the only thing I've done.