Microsoft has released Windows 10 Insider Preview Build 16215 on 8th June,2017.
You may go through the fixes and new features of this build here.
After installing this preview build I observed that the volume icon is missing in the taskbar. So to fix the problem I did the following steps:
- In Start Search box type in Turn System icons on or off and press the Enter key.
- Locate Volume icon and turn it on.
But still the volume icon is missing and I found only Network icon in the taskbar. One thing I noticed that the Network icon is awfully flattened. So I turned off the Network icon first and kept volume icon on.
Now the volume icon appeared. Finally I made both Network and Volume icons On and see the result below:
How did I fix the problem:
I uninstalled graphic card driver via Device Manager. Rebooted the system and installed the driver from the website of the manufacturer. Finally I signed out and in. Everything looks great now.