I did not uninstall the sound driver yet but just updated the Realtek Driver. But if I will do it, then I will get DDU first, the updated driver for your PC, and then go into safe mode.

You can check it here under Jayztwocents vod on how to use DDU https://www.youtube.com/watch?v=3puInnaG5ok&t=312s. Note though that for this video, he uninstalled the GPU driver instead but it should have an option for Sound Drivers as can be seen in the video.