1. Inspect the headphone jack to ensure it is not broken and is correctly seated in the port.
2. Check to ensure the headphone cable is properly connected.
3. Check the settings on the laptop to ensure that it is recognizing headphones.
4. Restart the laptop and recheck the settings.
5. Inspect the headphone cable for any signs of damage or fraying.
6. Try using another set of headphones to see if the issue is with the laptop or the headphones.
7. If issue persists, contact a technician for further assistance.