There could be a variety of reasons why there is no sound coming from a laptop. The most common causes are software or hardware related problems.
Software Related Issues
Muted Volume: The volume on a laptop may appear to be turned up, but in reality it is muted. This often happens if an external device such as headphones or speakers were recently disconnected. To fix this issue, simply locate the mute button and make sure that it is not enabled.
Incorrect Output Device: Laptops can have multiple output devices such as headphones, external speakers, or built-in speakers. If the output device is set to the wrong one, there will be no sound. To check if the output device has been changed, open the Sound Settings window from the Control Panel. Otherwise, look for a physical switch to change the output device.
Outdated or Corrupted Audio Drivers: If the wrong audio drivers are installed or the ones that are installed are outdated or corrupted, then sound will not be produced. To ensure that the latest drivers are installed, open Device Manager and check for available driver updates.
Hardware Related Issues
Internal Components: If the internal components of the laptop are malfunctioning such as the speakers, sound card, amplifier, or cables, then there will not be any sound coming out of the laptop. To test this hardware, connect a pair of headphones to the laptop and see if sound comes out. If it does, then the internal hardware is likely at fault.
External Devices: External devices such as headphones or speakers may also be the cause of lack of sound. Check the connections to make sure they are secure and properly connected. If the device is still not functioning, replace the device or try using a different one.
Power Supply: Low power supply can affect the performance of a laptop. If the battery has died or the laptop isn’t connected to a power source, then the sound card may not be functioning properly. Ensure that the laptop is plugged into a working power source and make sure the battery is charged.
In some cases, there may be a simple fix such as updating the software or changing a setting. However, if all else fails, the problem may be more complicated and require a technician. It is always best to consult a professional for further assistance in diagnosing and fixing sound issues on a laptop.