> 点击右下角的 Speaker 图标
> Open Sound Setting
> Device Properties
> Additional Device Properties
> Enhancement
> Loudness Equalization
> OK

[url] http://blog.creaders.net/u/7925/201910/358794.html [/url]

[url] https://www.thewindowsclub.com/volume-icon-missing-from-taskbar-windows#:~:text=1%5D%20From%20the%20WinX%20Menu [/url],open%20Settings%20%3E%20Personalization%20%3E%20Taskbar.&text=The%20Turn%20System%20Icons%20On,the%20On%20position%20and%20Exit.

> Search "Power Options"
> Additional power settings
> Chllose what closing the lid does
> When I close the lid
> Plugged in
> Do nothing
> Save changes

Sound Icon Missing In Taskbar

> Settings
> Personalization
> Taskbar
> Turn system icons on or off
> Volume
> Move the button from on to off, then to on again.

[url] https://www.thewindowsclub.com/volume-icon-missing-from-taskbar-windows#:~:text=1%5D%20From%20the%20WinX%20Menu [/url],open%20Settings%20%3E%20Personalization%20%3E%20Taskbar.&text=The%20Turn%20System%20Icons%20On,the%20On%20position%20and%20Exit.