Question GPU fans do not spin, when turning the PC on, also no display, how to fix?

[St1rx]

Hello!

I built this PC a few years ago and just today, when I was cleaning the PC from dust and trying to boot it up again, everything except the GPU turned on (fans didn't spin) and did not get a display signal. My specs:
CPU: Ryzen 3 3100
GPU: Gigabyte RX 570 8gb
RAM: Patriot Viper 8x2 16gb 3200mHz
Motherboard: B450M-A Pro Max
PSU: Xilence XP500W Bronze
Everything is stock, nothing is overclocked
I do not have a secondary PC to test the GPU or any other component
What should I do?
Any help is appreciated!

 

[DSzymborski]

It's surprising your GPU ran this long, with a fake 500W PSU.

If you can't test or buy anything, there's not much to do other than rebuilding the PC yourself, making sure everything's connected. We have a checklist.

"No POST", "system won't boot", and "no video output" troubleshooting checklist

"No POST", "system won't boot", and "no video output" troubleshooting checklist This checklist is a compilation of troubleshooting ideas from many forum members. It's very important to actually perform every step in the checklist if you want to effectively troubleshoot your problem. 1.Did you...

forums.tomshardware.com

(Don't just look at them and say "OK, I did that," actually go through the list one-by-one).

After that, a local shop can test what component failed.

 

[St1rx]

It's surprising your GPU ran this long, with a fake 500W PSU.

If you can't test or buy anything, there's not much to do other than rebuilding the PC yourself, making sure everything's connected. We have a checklist.

"No POST", "system won't boot", and "no video output" troubleshooting checklist

"No POST", "system won't boot", and "no video output" troubleshooting checklist This checklist is a compilation of troubleshooting ideas from many forum members. It's very important to actually perform every step in the checklist if you want to effectively troubleshoot your problem. 1.Did you...

forums.tomshardware.com

(Don't just look at them and say "OK, I did that," actually go through the list one-by-one).

After that, a local shop can test what component failed.

What do you mean it's a fake PSU? Should I be worried and change it immediately?

 

[DRagor]

What do you mean it's a fake PSU? Should I be worried and change it immediately?

It means it is not 500W PSU. Depending on what exactly version you have it could be around 350W or even less. So it is fake because it is not providing advertised wattage.

 

[Dark Lord of Tech]

"What do you mean it's a fake PSU? Should I be worried and change it immediately?".......YES- get a decent make and model.