Hello, I posted the same topic a while back, but my explanation might have been hard to understand.
Anyways…I want to record my instrument (bass) using only an amp and an aux cable. And no I don’t have an audio interface.
What I did was: Plugged bass to amp, plugged aux from amp to laptop mic jack.
At first I somehow managed to toggle with some settings on the device toolbar on audacity and got it to record through my aux cable. However I forgot how I even managed to do so and now I am not able to record through my aux cable.
Windows will normally enable the mic socket when a jack plug is plugged into the socket.
In the Windows Sound control panel, you should be able to see a green meter bouncing when you play something into the mic socket. This page may help: https://www.maketecheasier.com/set-up-external-microphone-windows/