Monitors make strange noises with my new PC

Hi!

Since I got a new PC, my Yamaha HS7 make strange noises when the PC is on.
I have the same setup like before(speakers, interface etc.) with my old PC I did not had this issue.
What can be the reason?

Would something like that solve the problem?
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Edit:
If I move the mouse pointer then the noise is even clearer.
I reconnected the interface to my old PC and I don’t hear anything.

Edit 2:
I’m using a Focusrite Scarlett 6i6 gen 2 with unbalanced cables