There are drivers at play but since it never worked then you have a warranty issue, not something you need to fix.
I have a laptop with one jack for headphones and microphone. The computer will not register headphones being plugged in. The speakers work fine and continue going when headphones are plugged in.
I have the newest audio driver and I can find no way to get the headphones to work. I don't know if it's the hardware, Windows 1-, the drivers, or something else.

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