Question System won't power up

Aug 4, 2022
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First post here!

I have an Asus Prime B450M-A motherboard purchased with a preinstalled Ryzen 5 3600 CPU and stock cooler. It has worked fine for about two years, then one day it would no longer start when I pushed the power button.

I suspected the PSU, so replaced that. There was no improvement.

I then replaced the motherboard - again, it still won't boot.

After switching the PSU power switch to on, a light in the case lights up. When I press the case power button, it lights briefly, goes out again and nothing else happens. The power button no longer lights when pressed unless I turn the PSU power off and back on again and then I press the case power button.

So I am wondering if the problem might be the case power button. Or, much worse, the CPU.

What should I be doing now to eliminate more potential faults?

Many thanks.
 

Lutfij

Titan
Moderator
Welcome to the forums, newcomer!

Make and model of your PSU and it's age? Try and take the processor over to a known working motherboard(that has the right BIOS version to accept your CPU). If the processor also does nothing on known working board, it's very likely that the CPU conked out.
 

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