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My HP620 laptop is having some sound issues. The speakers don't work but when I connect my headphones I do hear sound. What is wrong? I am using Windows 7.

FIDELIS
2012-02-23 08:26:00
Hello, this question has been asked in the past.  Here are similar questions/answers.  The first link leads to a question for a laptop with same model as yours:http://www.makeuseof.com/answers/fix-sound-hp620-laptop/http://www.makeuseof.com/answers/external-sound-laptop/http://www.makeuseof.com/answers/laptop-speakers-working/I would start checking for the obvious:-- make sure sound is not muted for speakers-- make sure speakers are set as default output-- make sure right sound is selected for speakers. 
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2012-02-23 08:21:00
1)  control panel then  device manager 2)  sound, video and game controllers then Right click on your audio device3)  choose "disable" then wait few seconds and right click, choose "enable"you can also choose uninstall (do not delete anything) instead of disable, then reboot and let windows to reinstall a new one.