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Laptop speakers does not sound, does not working HP Pavilion dv4 1220 US

Hi everybody.

I have updated my HP Pavilion dv4 1220 US to Windows 7 (64 bit). Every components are working properly. However, my internal speakers does not working. My laptop sound only with a headphones or external speakers.

Please, may somebody help me?.

 

Thanks.

Hernan [edited personal Information by Moderator]


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