Cause In order for your computer to play any sound, including CD music or Windows event noises, your computer must have a sound card that is installed and working. If your computer has a sound card installed but it does not seem to work, you probably need an updated driver. If the driver is new or you know the sound card once worked on the same computer, you probably need to check your volume controls—the sound may have been muted somehow.
The Pain Killer To check the volume controls, follow these steps:
- Click Start | Control Panel | Sounds and Audio Devices. The following steps assume you are using the Classic view of Control Panel.

If you are not sure if you are using the Classic view of Control Panel, click Start | Control Panel. In the left window pane, click the Switch to Classic View option.
On the Volume tab, make sure the volume is turned up and the Mute option is not checked. You can also check your speaker volume by clicking the Speaker Volume button. Click OK when you are done.

You may find it helpful to have a Volume Control icon in your notification area so you can easily adjust the sound volume. Just click the Place Volume Icon In the Taskbar check box on the Volume tab and click OK. Also, click the Advanced button to check the mixer settings.


