[SOLVED] Squeaky sound from computer

[WitheredRose]

Since December 29 I hear an unpleasant electronic squeaky noise from the computer, it is audible up to about a meter from it (from the back of the computer), the computer is behind the second monitor and its back is facing me.

The sound is not the same whole time, sometimes it is louder, sometimes quieter. This morning(live in Poland) I went into the bios to see if it is there as well, and so it is, and it was the loudest so far. But after about 40-60 minutes it quieted a little, the same in the evening - it was turned off at 3 p.m. and turned on at 7 p.m., it squealed a lot and later slighty quieted.

I tried to locate the place of the sound (the fans make it difficult) and it is audible near the graphics and the power supply. I'm pretty sure it's not a whining coil from gpu (I used to play Portal 2 and when loading between locations the fps was above a thousand and the coil started squeaking) - the current sound is not that bad, I would say it is more electronic and kind of slightly vibrant. The load on the computer does not affect the squeaking in any way, the fans even drown it out. The fan-off mode in the graphics also does not affect the squeak in any way. Therefore, in the end, I would guess that it is something in the power supply.

Below I am sending a sound sample from the power supply.
https://voca.ro/1erafvN9wlDl

I do not have any spare power supply or graphics card to replace, so I have 2 options:

1. take the computer to a computer repair shop to confirm where these sounds come from,
2. send the power supply for warranty.

Anyone ever had a problem like this? Or knows what it might be?

The PSU is SilentiumPC Supremo L2 650W 80 Plus Gold
Rest of the components:
CPU: AMD Ryzen 5 3600
Cooler: SilentiumPC Fera 3
Motherboard: MSI B450 TOMAHAWK MAX
Ram: Patriot 16GB (2x8GB) 3200MHz CL16 Viper 4
SSD: Crucial 500GB 2,5" SATA SSD MX500
GPU: Sapphire Radeon RX 5600 XT PULSE 6GB GDDR6
Case: SilentiumPC Regnum RG6V TG Pure Black

I had this PC for 5 and half a month

 

[Ralston18]

I heard more of clunk than a squeak....

Try using a long cardboard tube or rolled up sheet of paper to focus the sound.

Hold one end of the tube to your ear and carefully move the other end of the tube around the inside of the case.

Aim that end at various components and locations.

Finding/identifying the source location is the main objective.

Post accordingly.

 

[WitheredRose]

I heard more of clunk than a squeak....

Yeah, the sound sample is not very good.

Try using a long cardboard tube or rolled up sheet of paper to focus the sound.

Hold one end of the tube to your ear and carefully move the other end of the tube around the inside of the case.

Aim that end at various components and locations.

Finding/identifying the source location is the main objective.

I actually used one, though it was a very short one, and aimed it at GPU and PSU, and the origin of the sound appear to be PSU, though while I was aiming at the GPU I could also hear a sound from it, but the squeaky sound also resonated in my second ear, so I assume that sound from PSU could reach it.

 

[WitheredRose]

So this morning I found a longer cardboard tube and went to find the origin of the sound, but no matter where I checked I just couldn't find it. But I was able to locate a different sound coming from PSU, it was quiet chirping and crispy.

Fast forward to evening I decided I'll check it again, but this time I turned off all 4 case fans leaving only CPU fan and PSU running and it was still impossible to find it, so I decided to carefully turn off CPU fan for a few seconds and the sound was 99% coming from PSU, specifically from the fan! What would that mean?

I'm also wondering why the sound was sometimes loud, sometimes quiet, sometime almost unhearable, does anyone know?

 

[Mtop]

You may be hearing the switching of the mosfets through other components.
The switching will change depending on input power and computer load.
I could be noise on your AC line being filtered out by the power supply as well. Keep track of when this noise happens and what else is going on around you. Does the noise happen when the microwave is running, the blender, etc....