Windows 10: Line In - Not able to "Listen to this device" as intended.

An explanation of my setup:

My PC is connected to 2 audio outputs. One being my stereo speakers, and the other being my headphones.

My headphones, however, are connected to one of my monitors that has audio output.

My TV is connected to my PC's line-in port.


I used to use all three of these devices in conjunction with no issues. I'd simply switch audio sources (Speakers to Headphones, vise versa) and the line-in would go with it. However, I'm finding that the "Listen to this device" option doesn't work anymore.


The weird thing is, if I go through my speaker's properties and turn the Line-in port all the way up, I hear my TV's audio through my stereo speakers just fine. There aren't any signs of audio signal when viewing "Line-In" in the recording tab though, even when it is audibly playing. I can only listen to it through my stereo speakers this way.

In no way am I currently able to listen to my TV's audio through my headphones.


I've eliminated certain possibilities.

It is not hardware related. All other audio works with headphones connected to PC. Line-in cable works as I can hear it after turning it up in the Speaker's properties, but not when clicking "Listen to this device".


It has to be software related.


Does anyone have any idea what to do?


I've checked the drivers, I've force reset the Windows Audio service, twice. I've done just about everything which any support forum or video suggested.


I can usually get around this sort of thing, but I'm stumped.


I am trying to avoid doing a clean OS install on this PC. I've had to do it 2 times within the past month due to an unrelated issue.

I'm unsure as if it stopped working after one of these resets.


Any help is appreciated!

:)

 

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