RE: Dell Inspiron Audio issue
I have found it better to manually download the driver and not use the update process.
The instructions are not about updating the driver. It's about switching to the Windows native driver, as a test, to see if the Realtek driver is causing the issue. Another way to do it, that does not use the update process, is this:
1. Open the Device Manager (find it in the Control Panel, or type devmgmt.msc into the search box).
2. Expand the "Sound, Video & Game Controllers" section.
3. Right click on "Realtek High Definition Audio".
4. Click "uninstall."
5. Put a check mark in the option to delete the driver software, and then ok.
6. Restart the laptop. Because you removed the Realtek driver files, Windows will install its native audio driver, named "High Definition Audio Device".
7. Go back to the Device Manager and look for "High Definition Audio Device". If you see "Realtek High Definition Audio" again, that means that there was another version of the Realtek driver on your hard drive, and Windows found and installed it. So keep uninstalling & restarting until Realtek no longer appears under Sound...Controllers and "High Definition Audio Device" appears in its place.