Dell Venue 11 pro 5130 64 bit Windows 10 Home [sound problem]

Hello, 

Some time ago I bought that Dell tablet from second hand. Remember I had some problems with occasionally crackling sound. I tried several drivers and results were really surprising. One time crackling turned into murmur, other case crackling disappeared but sound was like accelerated. All the time something was still wrong with the sound. I was using tablet only occasionally so finally I decided to leave it alone.

Now, after afresh Windows install I have again same problem - sound crackling and I really want to ask about correct drivers for this tablet. Where can I download it?