Check whether the computer sound card hardware, speakers and other equipment are damaged.

Generally, computer failures are dealt with first by software and then by hardware. If your computer has no sound, please try the following solutions to check whether the sound card, cables, speakers and other devices are connected properly. If you are infected by a virus, you should run anti-virus software for comprehensive anti-virus. Click Device Manager and see if there is a yellow exclamation mark or question mark icon in front of the sound card. If it indicates that the sound card driver is not installed, then you need to install the sound card driver.