How to solve " no sound " problemn in windows

Steps :
1. Check your sound card

           Open Device Manager by clicking the Start button , clicking Control Panel, clicking System and
     Security, and then, under System, clicking Device Manager.‌   If you're prompted for an administrator
     password or confirmation, type the password or provide confirmation.

           Double-click Sound, video and game controllers to expand that category. If a sound card is listed, you
     have one installed. If no sound card is listed, check the information that came with your computer to see if
     there's supposed to be a sound card installed. If there should be a sound card installed, you'll need to
     install one.

2. Check if the cables are connected properly

     Speakers and headphones

     HDMI cables

     USB audio devices

     Multiple audio devices

3. Check power and volume

     1) Open Volume Mixer by clicking the Start button , clicking Control Panel, clicking Hardware and
         Sound,and then, under Sound, clicking Adjust system volume.

     2) Move the slider up to increase the volume.

  Thats all .