Chosen Solution
After replacing a CPU cooler, the unit powers on and then immediately shuts down. The LED on the Z270E is turned on and I am not sure where to start. When it shuts down, the LED is still on and none of the board LED error indicators turn on. I presume that there’s nothing wrong with the CPU. Any clues?
Try putting the old stuff back in and try again. If it works try swapping only the cpu cooler and try again. The problem u describing is often caused by a missplaced ram.
