The little horn under the computer is missing.

The first: "Control Panel"-"sound and Audio Devices"-"put the volume icon into the taskbar" has been manually turned off. Just open it.

The second type: "Put the volume icon into the taskbar" tick, invalid. Lost Sndvol32.exe, file path c:windowssystem32, can upload a sndvol32.exe in another machine, or find a system CD to find sndvol32.ex_ files copied to System32, Rename to Sndvol32.exe

Third: If you have used software to delete the startup items, and inadvertently deleted the volume icon to start. This time, "put the volume icon into the taskbar" tick, volume icon appears, but after the power-on volume icon does not recover, you must be set up in the Control Panel. (In this case, the network connection icon may also disappear). Www.3lian.com
This is the time to restore the deleted item as soon as the startup item in the registration list is restored.
"Start"--"run" Enter regedit open the registry, turn on Hkey_local_machinesoftwaremicrosoftwindowscurrentversionrun the new string "Systray" in its right window (The right key point on the run is new), the key value (double-click on Systray) is "C:windowssystem32systray.exe", if it is Win2000 system, then "C:winntsystem32systray.exe" That's it, okay?