Hello my headphone model is A4Tech HS-19 Comfort Stereo HeadPhone with Dual Ports One for Mic and one for the headset. I bought it about a month ago and everything was fine until suddenly yesterday, my pc was not picking up my microphone sound. I checked sound settings as well as devices and it was shown that microphone is plugged in. I even reinstalled my audio and microphone drivers but my pc is still not picking up sound from my mic. My sound is only picked up if I blow really hard into the mic or if I bring the mic near my mouth and shout in it. However, there problems do not occur when I use my headset in my phone. My phone easily picks up my sound. Does anyone know the problem?