Troubleshoot sound issues
Refresh the page
At the top of the browser, near the address bar, there should be a “refresh” symbol. Depending on your browser it may be in a different location, but it is generally in the top left corner. Click this, and your page will refresh.
Check the audio jack port
Look at your audio jack port
Make sure your headset cable isn't loose and plugged in all the way
If the cable is plugged in all the way, unplug the cable and plug it back in.
Check the headset mute button
On your headset look for a Mute Button
Make sure that button is not enabled on the headset
Check headset volume slider
On your headset look for a volume slider
Make sure your headset volume slider isn't turned all the way down
Restart router
Locate the power button or the power cable on your router
Hold down the power button or unplug the power cable
Wait 15-20 seconds
Either use the power button to turn the router on, or re-plugin the power cable
Wait for the router to finish powering on
Reconnect your computer to the network