My headphones are apple earbuds that have a built in microphone. I use a headphone adapter to plug it into my computer, since I have an audio jack and a microphone jack. It works fine, but with one problem. When I go to test my microphone, it picks up every single sound I hear on my computer. However, my microphone can still hear me. I have checked my volume mixer, and I can't stop my microphone picking up sounds without disabling sound itself. I have checked disabled devices and disconnected devices, and do not see anything called stereo mix. I'll provide any information you need to solve this problem, within reason.