check if you put the CPU Heat Sink properly
A PC wont start if it reaches a certain temp like 120 degrees celsius
or you losened a PC Component
check everything
Asus told me there is a failsafe in place that if you don't have a fan plugged into the cpu fan header while using the aio header you will get this code. It's a easy fix if your pump is working, go into fan controls and select ignore on cpu fan instead of monitor
Yeah ill try it tonight, I got it to post by taking out a stick of ram and re seating the,other in a different slot, but now I fet an amber light and no post