Dell Realtek Audio Not Working. If the issue persists follow these steps. This in-built tool can find and fix audio problems automatically.
Check if the audio device such as speaker, headphone, or headset is working by following these steps. Instructions for each step are detailed in the Microsoft Fix sound problems article by selecting the topic headers from the drop down menu. Sound not Working After Windows Update.
To restart Windows audio service, follow these steps.
Try this until you find that one that works fine.
Gone into BIOS to make sure HD audio is enabled. Instructions for each step are detailed in the Microsoft Fix sound problems article by selecting the topic headers from the drop down menu. Sound not Working After Windows Update.