How to get rid of the squeak on the speakers connected to the PC?

Question

Audio

A squeak with amplitude (pulsating) when speakers and headphones are connected to the PC in the front and rear panels, it squeaks equally (with other devices, the speakers and headphones work normally). Uses built-in Realtek.
The squeak starts from the moment it is turned on, it does not depend on the OS, if you enter UEFI it also squeaks.
If you increase the volume on the speakers themselves, the squeak becomes louder, if you reduce it, it is almost inaudible, but the normal sound becomes quieter. When you turn on the music, it drowns out the squeak.
What could be the problem and how to solve?
The problem is in the built-in Realtek, in
the mat itself. board, in the power supply or something else?
And if you install a PCI-E sound card, it will not beep?

Answer 1

In practice, there can be anything in any of the listed components. On one of the PCs (on a laptop, I think) I had a squeak when the mouse moved. There may be interference in the motherboard, there may be interference from the PSU, it may be due to the audio chip, it may be from all of them or from something else.
Ideally, take a sound card from friends and protest that the problems will be fixed.
For laughter, you can enable the spread spectrum item in the bios in the processor settings.

Answer 2

You can make yourself a gift and buy an external usb sound system with ASIO and all the gadgets (from 3 tr Behringer to 10 tr Scarlett). And listen to flac in original resolution and get high. True, then you want speakers for it. I recommend those tailored for musicians, i.e. monitors, for example Presonus Eris (7 tr.) In a few months it will become clear that the acoustics of the room are “well, completely unsuitable for good sound”, resonances will be heard, experiments with damping materials will begin, upholstered furniture, carpets, curtains will be used , foam rubber, special wall linings... You will design your future apartment / house in advance taking into account the acoustic profile, study a bunch of books, forums, become an expert, open your blog, they will turn to you for advice, offer interesting work ... And now with a lot of money in your pocket,
This is at best. At worst, some banality such as replacing the power supply or a pair of capacitors on the motherboard will help. I usually apply a capacitor of similar capacity in parallel to the one under test, without soldering, directly from the back of the board. If after that the computer starts / the problem disappears, I change it.

Answer 3

1) Ground the computer. Power the speakers from a separate non-noisy source.
2) Buy speakers with normal power, not from USB. Conforming to the requirements for sound quality.

Answer 4

I had such a problem on my laptop when any USB device was connected to the port closest to the audio jack. I decided to buy a USB hub with mains power, apparently the power circuit on the motherboard is weak.