Having problems with your Acer Extensa 4220-2148 Notebook ?

Acer Extensa 4420 sound problem

\015 I use to have perfect sound on this laptop and recently it doesnt work. I go into all of my sound systems and they all say my sound is fine. It only makes noises when it turns on and ceratin things. But over all no music will play, even when i click on the sound icon at the bottom right hand corner it makes no noise at all when i adjust the sound when it use to ding everytime. I have no idea what to do please help! thanks\015

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