The Volume Control icon is not displayed on the taskbar.
This behavior occurs because the system tray is not being loaded at startup.
To resolve this issue:
- Click Start, click Run, type msconfig in the Open box, and then click OK.
- On the Startup tab, click System Tray (SysTray.exe) so that a check mark appears next to this item.
- Click OK, and then click Yes when you are prompted to restart the computer.