What to do if the volume (volume control) icon is not displayed in the notification area in Windows XP?

The following error message appears and the volume (Volume Control) icon is not displayed in the notification area.

Error message:
Windows cannot display the volume control on the taskbar because the Volume Control program has not been installed.
To install it, use Add/Remove Programs in Control Panel.



Please refer to the steps below to avoid the symptom:

1. Click Start->All Programs->Accessories->Command Prompt.
   
2. The Command Prompt window displays.
   
   Type the following information, and then press Enter.
   cd c:\windows\i386
   
3. C:\WINDOWS\i386> appears.Type the following information, and then press Enter.
   expand -r sndvol32.ex_ c:\windows\system32
   
4. Type the following information, and then press Enter.
   
   

After the above operations are completed, please confirm whether volume icon is displayed in the notification area via Sounds, Speech, and Audio Devices in Control Panel.