A problem may occur in Microsoft Windows 10 where the system icons such as the Speaker, Network, or Power icons are grayed out or missing from the Taskbar Notification Area (Systray). The options to enable them in the Taskbar Properties screen may also be grayed out. Try the following steps to try to bring the icons back to working as they should.
1. Hold down the Windows Key and press the "R" key the bring up the Run window.
2. Type "regedit", then select "OK".
3. Navigate through the registry to the following location:
HKEY_CURRENT_USER
Software
Classes
Local Settings
Software
Microsoft
Windows
CurrentVersion
TrayNotify
4. Look for two values. One named "iconstreams" and "PastIconStream". Right-click and select "Delete" each value to remove them from the registry.
5. Close the registry editor and restart the computer. Hopefully, your System icons have reappeared in the Taskbar Notification Area (Systray).
If that does not work try.
1. Repopulate the Taskbar via Command Prompt
If your Taskbar is missing its icons and the tray at the bottom right is missing functionality like the clock, you might have to dip into the command interface to remedy your issue.
Fortunately, this isn’t as intimidating as it might sound.
launch a Command Prompt with administrator credentials, which is required to open the Disk Image Servicing and Management (DISM) tool that we’ll be putting into action to make this fix.
Use the following code in the resulting prompt, and you should find that your Taskbar returns to its normal state:
DISM /Online /Cleanup-Image /RestoreHealth