I recently bought a lapel microphone and weirdly enough it won't work on my desktop. The computer can detect the microphone but no audio is getting picked up by the mic. I tested the mic on my laptop and it works fine so I'm assuming my desktop has the problem. I tried plugging it in the headphone port (using the adapter that came with the lapel mic) yet still nothing but my headset (with the adapter) works fine on it though. Any suggestions?