If your Windows sound is not working there are some steps you can take to diagnose the problem. The following steps begin with simple issues like muted sound, sound playback device, speaker connection, and other Windows sound instructions and diagnostics.
How to tell if your speaker connection is plugged-in
Most computers have at least three jacks that connect to sound hardware usually located on the back of the computer. Your speakers should be plugged into the green line-out jack. Just to be certain that the speaker connection is firmly seated, go ahead and unplug and then plug it back into the green line-out jack.
Windows sound still not working after checking your speaker connection to the green line-out jack?
Did you check to make sure your sounds are not muted, that your speaker volume knob is turned up, and that there is a power (your speakers plugged into a power outlet)?
Did you make sure you have a sound playback device enabled?
If you checked these items already, then go to the next step by clicking the link below to learn about Windows Device Manager to check if sound hardware, sound card, or audio device is installed.