Cracking sound causing total audio crash

[Me1bourne]

Hey guys!

I have a problem with audio.

I tried to diagnose it for about a week using different methods.
In short, PSU is Seasonic s12ii 520W which is 8 months old, sound system Logitech Z-5500.

So, my speakers started to randomly produce cracking sound, sounds like radio having bad signal strength, and after that, it's leading to total audio crash with weird loud cracky noise.
After that, I cant even play music or a video on youtube. Play button just wouldn't react. Restart fixes this.

Interesting thing:
I have a second pc, totally different, so I used it for testing.
As soon as this buzzling noise appeared, I disconnected audio wires from my main rig and !attention! the noise dissapeared. Then I connected the wires to the second rig, and the noise appeared again. I tried to connect different wires, but the problem remained.

 

I have everything connected to Super-Solid-Line extension socket which is 1 yr old.

I understand that I might have faulty speakers, but why are they causing audio crash?

Or it's happening because something in my system acts like antenna and catching router signal which is in the same room.

 

Any help would be welcomed

 

[Guest]

See the guide in my signature. You've left out important steps/information.

[Me1bourne]

2 minutes ago, SSL said:

See the guide in my signature. You've left out important steps/information.

Wow, thank you very much!

I will