The microphone on my Gembird MHS-200 usb headset doesn't work properly. Whenever I try to record I get an annoying buzzing/static sound overlapping my voice. But this only happens on Windows 7 (I've tried it with Debian Linux and I get no interference whatsoever), and only when my other USB devices are connected (mouse, keyboard). I've also tried connecting the other USB devices to the front USB ports leaving the headset the only USB device connected a the back of my PC (and vice versa), but it didn't help. Updating the drivers also didn't help as the headset uses drivers provided by Windows 7. Can anyone help me plz?