Sound issues

First check cables, volume
Try these steps:
Check your speaker and headphone connections for loose cables or the wrong jack.
Check your power and volume levels, and try turning all the volume controls up.
Some speakers and apps have their own volume controls, and you might have to check them all.
Try connecting using a different USB port.
And remember that your speakers probably won't work when headphones are plugged in.
Step 1.Click on the sound icon on bottom right of task bar and make sure there is no red circle with a cross going through it. Make sure to raise the volume bar to something higher if it’s very low.
If that does work, try this:
Step 1.Go to Start/window and righ-click
Step 2.From the list of results click device manager
Step 3.In Device manager under sound, video and game controllers, select your sound card open it
Step 4.Select the Driver tab, and select Update Driver.