WIN8 volume icon disappeared how to get back

WinDOWS system sometimes encounter the small speaker on the lower right corner of the computer suddenly disappeared, so loud speaker volume icon why it is missing? Some users are installing some software or computer virus, there is their own misoperation makes the system lower right corner of the small speaker disappeared. So how to appear in the lower right corner of the system such a small speaker back?

Right in the status bar (lower right corner of the screen) right time (WIN7 is right in the small triangle icon)

In the pop-up menu to find "custom notification icon" option, click to enter

Go to the Notification Area Icon page and find the link "Enable or Disable System Icon" ("Turn system icon on or off" in WIN7).

In the new page to the drop-down, find the "volume" column

To the right of the volume "off" to "enable"

Then point "OK"

OK, the volume icon is back