New PC won't start, mobo flashes once that's it

Hello r/buildapc ,

Today my new motherboard, ram and CPU all arrived.

When I installed it all it didn't start. The motherboard flashes white once and that's it. No fans starting nothing.

I have tried uninstalling several parts and starting but it's all the same. One white flash at the motherboard led and that's it.

Even when I only power the motherboard with nothing else connected it gives the same effect...

Anyone got a clue what might be the problem?

My specs are: New x570 aorus elite motherboard New ryzen 5 5600x cpu New 2x 32gb ram Old and previous working corsair rm650x psu Old and previous working AMD 480x gpu

Posted Jul 17, 2021, 5:59 PM UTC

27

Did you update your Motherboard BIOS, the X570 boards usually needs updating for Ryzen 5000 CPUs to work.

2
DutchRobertOP•

I haven't, I can't even get that far.

Also whenever I get rid of all cables except for the power cable to the motherboard it still does the same so I dont think that's the problem...

1

It did the same with my Motherboard. I had to update it with a USB with nothing else instaled/powered so it would recognise my CPU.

Do you have an older CPU to test. If not there are YouTube vids on how to flash your BIOs without a CPU/anything installed. Hopefully you'll be up and running in no time.

1
DutchRobertOP•

But when everything is detached but the mobo, the cpu shouldn't matter, should it?

1
[deleted]•

[removed]

1
[deleted]•

Have you figured out the issue? I'm having the same problem except the pc has worked fine for 3 weeks (since build) and now stopped.

1
DutchRobertOP•

Sadly no. I kept trying and accidentally damaged the cpu. Bought a new one. Installed it and it worked...

1