How to re-install deleted microphone device in windows 10

Jan 30, 2019
No audio on Acer laptop. Somehow the microphone device was deleted. The volume shows 100% and speakers are Realtek high definition.
Jan 30, 2019
After many hours of research I answered the question. It seems that an Intel audio driver was incorrectly pushed to devices via Windows Update in January 2019. To fix it see the link below. I followed the instructions and it worked. I have audio again.
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