The hidden icon in the lower right corner of the Win7 system is missing. How to do

  
1. First right click on the taskbar and select “Property” option;
2. In the open property interface, “Taskbar” tab Next, click on the "Customize" button in the notification area;

3, then in the pop-up interface, "Always show all icons and notifications on the taskbar", the previous check is cancelled, click Ok, so the small triangle icon on the taskbar will reappear.

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