If your computer is having problems playing sound, try using the Playing Audio troubleshooter to fix the problem. It checks for common problems with your volume settings, your sound card or driver, and your speakers or headphones.
To open the Playing Audio troubleshooter:
1. Click the Start button, and then click Control Panel.
2. In the search box, type troubleshooter, and then click Troubleshooting.
3. Under Hardware and Sound, click Troubleshoot audio playback.
4. Follow the instructions in the troubleshooter.
The sound motor has probably dried up. You can get a small bottle of SM speaker oil for about seven dollars at any electronics store. They usually keep it behind the counter since it's not commonly purchased so you'll probably have to ask an employee to get it for you.
Restore our system.
check the drivers or hardware
turn on the speakers bro