Would anyone know what might be wrong with my Surface Pro 3. When I hover the mouse pointer over a webpage which has a hyperlink to audio / video I get the same loud 'audio thump' sound through the headphone jack as if I'd just plugged in a headphone jack for the first time with live speakers attached. The sound only happens when I have the audio jack connected. It is as if the headphone gate is being opened and closed automatically by Windows 10 when it detects an audio file. Thanks.