Annoying Sound

Speakers makes popping sound everytime when i start game or open browser or any other software. I tried reinstalling audio drivers but still getting same problem. I tried connecting my headphones and problem was gone - i didn't noticed any popping or crackling sound coming through my headphones...

Hello I have a MacBook Pro 13inch Early 2011. A couple of weeks ago some coffee was spilled on the table I was working on and some (not much) got onto the logic board. I cleaned it off and the Mac worked afterwards. Then 2 weeks ago my Magsafe charger broke so I replaced with another from...