Open Sounds and Audio Devices in Control Panel.
On the Volume tab, under Device volume, select the Place volume icon in the taskbar notification area check box.
To open Sounds and Audio Devices, click Start, click Control Panel, click Sounds, Speech, and Audio Devices, and then click Sounds and Audio Devices.
If your sound card volume can be changed using software, a speaker icon appears in the notification area You can change the volume by clicking the icon and adjusting the slider.
Adjust the volume for multimedia playback devices
Adjust the volume for multimedia recording devices
Change the system sound volume
Sounds and Audio Devices overview