[SOLVED] New PC build won't turn on

[myunm]

I built a PC with the following config yesterday:

• mobo: asus rog strix x570-e
• cpu: amd ryzen 5950x
• cpu cooler: arctic liquid freezer ii 420 rev3
• ram: Kingston 2x32GB DDR4 3200MHz HX432C16PB3K2/64
• psu: be quiet straight power 11 850w 80 plus gold
• gpu: ASUS GT710 2GB
• storage: WD Black SN850 1TB

I installed W10 Pro yesterday and the system was working completely fine. Today when I tried to start it, it wouldn't even POST. Instead, I heard the psu power-on click, mobo displayed code 00, fans spinned up and under a fraction of a second the system shut down, the psu made the same clicking noise. With very short breaks it tried to start up again, but failed exactly the same like the last time. It took ~4 seconds for me to realize something is wrong and I flipped the PSU's switch off. I tried again after waiting a few seconds hoping it could fix it, but it didn't: exactly the same happened, but now i flipped the switch in less than 2 seconds. I looked inside the case to see if I can find anything obvious preventing the PC from starting up. I found nothing: everything was plugged in just like yesterday nor was the AIO leaking. That took about a minute and I tried again: now the PSU won't even click, the mobo won't display anything, I got no fanspin (I haven't changed anything on the system though). Since then I did what I was able to (having only this PC and unable to test PSU nor the mobo in another one): disconnected all the fans, took out the RAM sticks and the GPU. Nothing helped, it won't do anything. When I plug in only the motherboard and not the cpu power connectors, the red LED indicating that i need to plug in that too lights up, so I assume the PSU isn't fully dead. When I updated the BIOS yesterday, I remember connecting the motherboard's power connector only would make the RGB lights on the left glow. I think I turned those off from the BIOS after I installed the OS and that could maybe cause it to not light up now. There were 2 ways to clear the CMOS, I did both of them (the CLRTC pin and the battery removing methods), but the RGB leds still won't light up when I connect the motherboard (when I flip the PSU on, it flashes once very very dim)... What can cause the problem?

 

[Lutfij]

Welcome to the forums, newcomer!

Disconnect the system from the wall, press and hold down the power button for at least 30 seconds and then reconnect all components to try and power up. Power up and see if that helps. If the system powers up after the prior sentence, then the issue is that you have a grounding issue.

You will need to breadboard the system with only the bare minimum including the discrete GPU since your processor does not have an iGPU, so one stick of ram, only boot drive and the discrete GPU. Also, I'm curious how you got display off that GT710 since a non UEFI VBIOS card shouldn't work.

To rule out a faulty/failing PSU you will need another replacement unit from a friend or neighbor.

 

[myunm]

Well, the PC did not power up 🙁 It does exactly the same as what it did before: nothing. Later I also tried the paperclip method to jumpstart the PSU (it was not connected to anything else), but it didn't seem to do anything. I've also read that this could be some sort of a protection mechanism, so it could be even normal in this case .

 

[DashingRiggs]

I would reseat the ram as the spinning fan part would make sense almost.

 

[myunm]

Just tried that... The mobo doesn't give any sign of life no matter what combination of modules are plugged in (other than the red LED indicating I need to plug in CPU power too)... As it really looks like my PSU just gave up and no longer wants my mobo to even give a q-code, I returned it to RMA.
The config should be fine though, isn't it? Everything should be compatible, I shouldn't be able to mess up which module goes where? Other than that, I only need to connect the AIO CPU cooler, the case fans with the 4 and 3 pin connectors and also the mobo's and CPU's 24 and 8 pin power plugs respectively? I feel like I did everything right and it just gave up on me. And the previously mentioned GPU compatibility issue doesn't seem to exist, it was running fine yesterday and I got display output. I've read that the source of the 00 code is diverse, but that rapid on-off switching must have hurt the PSU too, maybe it even triggered some protection mechanism.

 

[myunm]

Update: They returned the money, so I bought a new PSU and it finally came to life. Boots, everything is completely fine now. I hope this won't happen again...