Picture disappears, no sound, high-frequency noise in headphones / speakers, what could be the problem?

Question

Video cards

Hello dear experts, I really hope for any help.
I will try to describe the situation in as much detail as possible.

The first problems began with the fact that the image from the video card (VGA) began to disappear from time to time, this happened precisely at the time of rebooting Windows 10. There is an image, a reboot - there is no image. Reboot again, the image is there again. Then, at some point, the system on the SSD broke down so much that I had to format the disk through Linux using various utilities. Windows couldn't do anything with it. After these manipulations and installing a fresh dozen, everything worked fine for a couple of weeks, and now the video card stopped working again, but now, in addition to the video card itself, the image does not even come from the motherboard if the video card is connected, although the settings for simultaneous operation of the built-in and discrete are enabled in the BIOS kart.
And the worst thing is that now the sound has also disappeared, all devices are found in the system and the sound goes to them, but in fact there is only a high-frequency squeak and other interference in the headphones, which increase when interacting with the mouse or keyboard, I tried to reconfigure everything that can be reconfigured, 2 reinstalled the system several times (for other reasons), tried to redirect outputs through Realtek manager, nothing helps.

The main guesses are in the direction of the PSU or the motherboard, can anyone tell me in which direction you can still think?

Answer 1

Most likely a problem with the motherboard. I'm 90% sure. Well, for starters, get a motherboard from friends or somewhere else and check if there is a problem in it to make sure. Then look at the feasibility of the repair, but it seems to me that the repair is useless, because you don’t know exactly what they will do there. Write your characteristics of the PC, and I may be able to suggest in more detail.