taskhostw.exe keeps playing ir_begin.wav after Win10 update

Since last Win10 update, my Dell Precision 7510 started to play randomly this wav file. It seems the sound file is being played whenever I start a program requiring high disk activity.

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How do I prevent this .wav from being randomly played?


Sorry guys, I've been so dumb.... After further investigation, I found out that somehow I had modified the predefined sound scheme: the open application event was triggering the wav file! Sorry again!