HELP With DRAM_LED on first pc build

Hi,

I just finished assembling my first ever pc and I have a problem. When I press the power button, every fan starts but I get a yellow led (underneath the orange power led) indicating that I have a problem with my ram. I have tried every combination in every sloth and it still doest post...

What can I do?

Mobo= Asus strix z270e gaming
Ram= g skill ddr4-3200

This is exactly my problem:

Thanks