No sound issue is probably caused by missing drivers. When your computer has no sound, you may want to update the sound driver. In this post, you’ll learn how to update the Realtek audio driver easily for your computer.
There are three methods for you to update the Realtek audio driver easily; just pick the easier one for you.
1) On your keyboard, press the Win+R (the Windows logo key and the R key) at the same time to invoke the Run box.
2) Type devmgmt.msc and press Enter to open the Device Manager window.
3) Expand category “Sound, video and game controllers”. Under this category, right-click on “Realtek High Definition Audio”. Click Update Driver Software…on the context menu.
4) Click Search automatically for updated driver software (Different systems may have different displays here.).
If the driver is up-to-date, you will be prompted that “The best driver software for your device is already installed”. Then you don’t need to update the driver.
5) After the driver is installed, restart your PC for the changes to take effort.