Speaker has not working in Dell Vostro 320

[rockholic]

hello All, i've got problem in my Dell Vostro 320 AIO PC with windows 7 ultimate 32bit, internal mic and speaker has not working? but in device manager that device is ready! and Dell Vostro 320 have an internal speaker.

help me please

 

[fireberd]

Go to the Control Panel/Hardware and Sound and finally Sound. In the Sound Playback panel, make sure your speakers are set as the default playback device.

If that is OK, go to the Device Manager and RIGHT click to highlight the entry for the Sound device and then LEFT click "Uninstall" (DO NOT check the block to uninstall the drivers). Restart the PC and when Windows starts it will detect the sound and reinstall it. This fixes a lot of flakey problems.