How does the Windows 8 taskbar power icon disappear?

1, click the system taskbar a triangle arrow, expand the Hidden program icon, as shown below

2, click the "Custom ..." button, as shown in the following figure

3, open the "notification area icon", the following figure:

4, find the power icon, change mode for "Display icon and notice" can be, the following figure:

5, if the notification area does not have a power icon, the Power icon is turned off, click "Enable or Close System icon", the following figure:

6, open the System icon Setup Panel, the following figure:

7, find the Power options, set its status to "Enabled" can be, the following figure:

8, the setup completes, the following figure: