Hello Tom's Hardware users, I'm having a problem with my microphone from my headset (A4Tech HSP-100u). Every time I use it on Skype, after 10-20 minutes it starts buzzing and I have no ideea why. I went back to my retailer and changed the headset with the same model but I'm having the same problem. I reinstalled my OS (Windows 7 Ultimate) and it's still the same, could you help me please? Thank you in advance.