1. Plug in the audio cable again and restart.
2. Start setting up the sound and audio equipment of the control panel and adjust the volume of the equipment from low-key to high-key.
3. If the color is gray. There are two situations: no audio equipment or no volume control program.
4. Right-click My Computer Properties Hardware Device Manager. Expand Sound, Video and Game Controllers and uninstall in yellow! Number of sound card drivers. Replace the sound card driver with the driver lifecycle or driver wizard.