Then go to control panel,system ,hardware ,device manager option
There if u find any question mark or exclamation mark in yellow Color that means sound drivers are not installed properly
please reinstall sound drivers properly
or else
If no question mark or exclamation mark then check the cable connections of the speaker to the machine
or else
In control panel , select sound audio devices open it there u have
volume,sounds,audio,voice,hardware options
1)See whether it is mute
2)In audio option select default audio device and recording device
should be same
this should solve u r problem .if it is not solved please let me know u r problem briefly
or else put the model number and brand name followed by drivers search in ww.google.com
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