Windows10下音量图标变成灰色无法选择状态怎么办
10-02
微软社区的解决方案：
1. Left click on windows icon and choose settings.
2. Click on display tab.
3. Change the size of text to 125% Then apply.
4. DO NOT LOG OUT YET. Choose sign out later!
5. Change the text size back to 100% and click apply.
6. Now sign out and sign back in.
Your volume icon will be back. =)
简单来操作就是 右键点击桌面，选择显示设置，上调或下调当前字体显示大小，选择注销(此时一般注销后图标会出现)。
或者稍后注销，再次改变当前字体显示大小，然后应用，注销，音量图标出现。