Hi, 

Have you tried checking toggling the volume on the system using a key combination of the Fn+F2 or F3 key?

Srikanth 

Hi Srikanth,

Fn+F2 or Fn+F3 actually does nothing to the system.  But pressing F2 would bring the OSD volume control out and I can see master volume number goes down on screen, and vice-versa with F3.  The only issue is that, the volume is actually NOT changing, only the on-screen number is.

Believe I have the Fn-lock on that's why just by pressing F2 or F3 is same as normally Fn+F2 and Fn+F3.  But just verified that releasing Fn-lock does not resolve the issue.

Turned out to be a driver issue.  Dell support team replaced the audio driver with Microsoft HD audio driver and the controls are back.  All resolved now.  

Thanks,

Hi,

sorry to bring up an old topic but I'm experiencing exactly the same behavior.

Would you mind sharing which driver DELL used instead of the Realtek driver to solve this issue?

Thanks a lot.

BR

This problem still persist(after 12 Jun Realtek driver)I remembered when clean install OS, volume work OK, but after install Dell driver, volume no more work. 

I'm having this same issue. The master volume control doesn't control the system sound. The number changes, but the actual volume level stays the same.

I too had this problem arise after an update. I was able to solve it by using the Microsoft HD audio driver also. Here is what I did:

1) In the search box on the taskbar, I searched for device manager and opened the program.

2) In the "Sound, video, and game controllers" section I located the Realtek sound device.

3) Right click on it and choose "Update driver".

4) Choose "Browse my computer for drivers".

5) Choose "Let me pick from a list...".

6) Uncheck "Show compatible hardware".

7) Scrolled down to Microsoft and selected "High Definition Audio Device...".

I was prompted to agree to use the driver although it may not be compatible, I said yes.

Volume keys started to work again. Hope this helps someone.

Thank you!

I was having the same issue and installing the generic Microsoft audio driver didn't work. However, i read on the dell support site under the Realtek audio driver that the latest driver requires the Waves Maxxaudio application which can also be downloaded on the support site. Once i installed that and the latest Realtek driver and rebooted, volume control is working again.