Hi, I have a Satellite LD305D-S5686 and whenever I try to use the mic (for in game chat, or recording, or any purpose whatsoever) there is a horrible buzzing you can almost not hear my voice. I've tried several things, re-installing the drivers and updating etc, but nothing helps. I've tried both a headset, and the internal mic, both have this loud buzzing sound it is very loud. On the headseat there is a Mute button, and I've tried recording a soundfile even with this mute button on, there is very loud static. Suggestions ?