first of all, check the hardware problems, and eliminate the problems of connection errors and hardware damage. This kind of problem is also common, but the hardware problem is mistaken for the problem. After troubleshooting the hardware problem, please see the next step.

to eliminate hardware problems, we should consider whether the system lacks a sound card driver. Right-click on the computer and select Properties. Enter the computer properties.

in the property page, click the device manager option on the left.

in the device manager, all the hardware of the computer is listed, among which the sound card driver information is included in the options of sound and game controller. Click on the front triangle with the mouse.

If there is a yellow question mark inside, it means that the system lacks a sound card driver, and you need to install the driver to make the computer sound.

in the universal sound card driver, find a link, enter it, then install it, and then restart it to restore normal sound.