No sound comes out of the screen?

I just connected my laptop to my new screen, so I connected it with HDMI. But somehow no sound comes out of the screen. Have already looked at the sound settings and you should also get audio from the screen but it just does not come.
Can someone help me what to do?

Does the umbrella have boxes at all? Then what is the model?

Is the screen muted? Or does he have a speaker at all?

Yikes really has no xd

Something like this always happens here ^^ But can happen. A few good boxes are better than the Quakers, which are only good for system sounds.