According to Lenovo, You should perform some steps to check whether Lenovo sound is due to the driver or hardware. Follow the steps below to fix the sound not working Lenovo ThinkPad: Run windows audio troubleshooter: (1) Select the Search icon from the taskbar. (2) Type Troubleshoot. (3) Select Troubleshoot from the list of results. (4) Select Playing Audio and then click on Run the troubleshooter. (5) It will find the issue and try to resolve it. Verify the volume is set correctly and is not muted: Check the settings in the Taskbar Volume Control and in the appropriate output controls in the Playback Master Volume Control. Also, verify that the device is not muted and is set to a proper level in the Master Volume Control. (1) Check the sound in the taskbar and ensure the device is not muted. (2) Click the speaker icon ( or) on the Microsoft Windows system tray or taskbar to open the Volume control. (3) Move the slider to increase the volume and see if the sound is audible. (4) The volume control may need...
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