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I have trouble using the mic input of my Dell Inspiron 3542 laptop, which is out of warranty (so no Dell support).

When I use any application requiring a mic, there is no input from the built-in microphone. I have also plugged in two different headsets with a 3.5mm jack but neither one worked.

I have gone through all of the steps mentioned on troubleshooting websites (e.g. this one and this). I am so desperate that I even tried Microsoft help.

Also, I noticed that if I put my finger on the tiny hole, above the monitor where mic is installed, an echoing sound starts to come. If I tap my finger on it, it does recognize some tap sound.

I also uninstalled the mic from Device Manager, updated the driver, ran Windows update and have updated BIOS and other drivers using Dell Support.

So at this point, I am completely out of ideas of troubleshooting.

However, I did notice that when I plug in a headset through USB, the headset mic records audio fine.


I have already checked these questions:

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