Intel NUC D54250WYK2 - Sound problem with hdmi

Hi

I have a NUC 4250, and I've had it for a few days now.

I use HDMI for picture and sound.

There is nothing wrong with the picture, but the sound stops and starts with about 2-minute intervals.

The setup is running Windows 7, after installation there is no sound problems, but after windows update has run a couple of times, then the problem starts again. (I thing this is where the problem is)

I have reinstalled windows 7, 3 times now.

I install the latest driver after installing windows 7

What should I do to get the sound to work properly?

PS.

I am using and trying the following:

MP3 - Youtube - Play video in VLC - Play video in kodi // all these have the problem!