Faulty machine Dell as an example
Step1: Check whether the system prompt sound is normal, if it is normal, you can observe the second step;
Step2: Open Computer Management - Device Manager - observe whether the sound device is normal, right click to edit and restart the driver
Step3: Open the device that cannot play media sound to check the settings, take Firefox as an example
Open your browser settings and find the Privacy & Security query Autoplay settings button
Change it to allow audio and video
step: Still unable to play sound
It is not recommended to use the driver software to upgrade and install the driver. The update process is slow and may fail. You can re-download the driver on the official website, update it manually, and ensure the safety of the computer data during the update. Before performing any diagnostic operations, it is recommended to make a data backup.
Find the driver for the corresponding computer model to download and install
BIOS download path:
dl.dell.com - /FOLDER09000088M/1/
After the installation is complete, restart your computer.