Sorry for my bad english, but i am very nervous about this probleme. Today, i wanted to start my PC, but it won't. IT turns on the case fans and the case rgb but the motherboard's rgb doesn't. Also it doesn't give any signal to the monitor or other periferics. The only thing that is on is a red led in the down right corner of the motherboard witch relate to the CPU. Motherboard is Gigabyte z270x ultra gaming.