What to do with the Windows 7 tray area not displaying the power icon

Most of these problems are caused by improper optimization of the system, in the System run box, execute the "gpedit.msc" command, and in the System Group Policy console window that pops up, position the mouse over the local computer policy → user Configuration → administrative Templates → Start menu and taskbar node. In the list area to the right of the node, double-click the Delete Action Center icon option, select the Not Configured option, and click OK to return. In the blank area of the system's taskbar, right-click, select Properties on the shortcut menu, click the "Notification area" tab, press the "Customize" button on the tab Settings page, find the Power options in the custom Announcements list, and select "Show".