Question PSU or Motherboard problem?

[MarkJohns]

I have a prebuild Asus ROG
Out of a sudden it turned off
I started troubleshooting and I found out that it's something with the "ATX_12V" If I plug in the cable nothing turns on the Pc if I plug it out everything spins lights up but nothing on display.
It could be a PSU problem or I need to change motherboard?
Something needs changing for sure but don't know what.
I also took apart the psu and nothing seemed burned on the circuit panel.
I'm lost and I hope someone might help

https://imgur.com/a/rGuk9fL

 

[Lutfij]

Welcome to the forums, newcomer!

I have a prebuild Asus ROG
Asus have a number of prebuilts in their portfolio. Which one do you have? A model and SKU would help us narrow down what you're working with.

It could be a PSU problem or I need to change motherboard?
If your prebuilt came with a discrete GPU, remove that and see if you're able to power up the system, while your display is hooked to the motherboard. I'm assuming your processor has an iGPU. If you have F SKU intel processor or an AM4 platformed processor(not APU), then you won't get a display output off the motherboard's rear I/O.

Moved thread from Power Supplies section to Systems section.

 

[Dark Lord of Tech]

What are your full specs , including make and model of PSU.

 

[CountMike]

I have a prebuild Asus ROG
Out of a sudden it turned off
I started troubleshooting and I found out that it's something with the "ATX_12V" If I plug in the cable nothing turns on the Pc if I plug it out everything spins lights up but nothing on display.
It could be a PSU problem or I need to change motherboard?
Something needs changing for sure but don't know what.
I also took apart the psu and nothing seemed burned on the circuit panel.
I'm lost and I hope someone might help

https://imgur.com/a/rGuk9fL

That's one of common signs that VRM on the MB is gone bad or some of it's parts burnt out.
It's not always possible to just visually find problems in the PSU, there are small but important components that don't carry much power and can burn without visual sign. Unless you are experienced in working with electronics, you shouldn't open PSU, it's large capacitors can carry high voltage charge for days unless properly drained and give you a nasty shock.
You can and should check voltages in ATX_12V by powering (closed) PSU. turning it on by connecting Green and any Black pin on 24 pin connector and measuring voltage at ATX_12V connector, one row should have +12v and other row is ground.

 

[MarkJohns]

That's one of common signs that VRM on the MB is gone bad or some of it's parts burnt out.
It's not always possible to just visually find problems in the PSU, there are small but important components that don't carry much power and can burn without visual sign. Unless you are experienced in working with electronics, you shouldn't open PSU, it's large capacitors can carry high voltage charge for days unless properly drained and give you a nasty shock.
You can and should check voltages in ATX_12V by powering (closed) PSU. turning it on by connecting Green and any Black pin on 24 pin connector and measuring voltage at ATX_12V connector, one row should have +12v and other row is ground.

So that means, I need a new MB