Windows 10: White noise

When I turn on a Microsoft game app like Microsoft Mahjong my computer speakers make a very loud white noise. It turns off when I close the app the sound stops. It is very loud!

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White noise

Every so often when I open a window [new tab] my computer will play white noise (babbling brook, chirping birds) and I don't know how to disable it / turn it off. Suggestions?

 

White Noise on Video Content

As of yesterday when ever I try to open a video, you tube I am hearing a very annoying 'white noise' over and above the commentary or audio content.

This sound is even accompanying incoming email messages on Outlook.

I have run troubleshooter and restarted my laptop but this has not solved the problem.

Any suggestions ?

 

White noise after updating Windows 10 Pro

• I have a HP ProBook 470 G4 runing Windows 10 Pro with 16GB of ram and an Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz. Last night windows did an update. this morning I find that all audio plays with white noise over it. the white noise is loud and I can barely
  make out the audio if at all. I have run my HP assistant and updated all drivers and still no change. This happened once before after a windows update and I was able to fix it by updating the audio drivers, no such luck this time. This machine has two audio
  devices and both as listed as OK. Intel Display Audio and Conexant ISST Audio and I have also repaired both of those drivers as well and are both listed as OK. Does anyone have any ideas as to whats going on and how I may fix this issue. Thanks in advance
  for the help and input and time!