Windows 10 Microphone not getting detected nor Stereo Mix detecting any audio

[MayankDhillon]

I bought a Dell Vostro 3470 desktop PC recently and when I plugged in my earphones in it the speakers got detected but not the mic. So I searched on internet for the solutions and I've tried the following:

1. Tried another headphones and even a standalone mic.
2. Uninstalled drivers from device manager and restarted device (This reinstalled the drivers).
3. Ran "recording audio troubleshoot" in which I was presented with these options:
   1. 

• When I tried first one it said that the device is not plugged in even though it was (tried both front and back jacks)
• When tried second it said that "Stereo Mix" is disabled, which I enabled after this.
• After enabling the Stereo Mix in sound settings input device is now set to "Stereo Mix (2-Realtek(R) Audio)" but it does not detects any sound.

The device manager looks like this:

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Sound settings looks like this (note: The mic was plugged in) :

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I'm also attaching screenshot of diagnostics tool if that can help:




I don't really know what this Stereo Mix is but all I know is that this does not work.

I've exhausted all the solutions I found on internet for this problem so any help will be much appreciated.

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