The volume control slider on the Windows 7 taskbar lets you increase or decrease the sound level of the speakers. The slider can sometimes malfunction or reduce the sound level without you doing anything. This is mostly caused by corrupt drivers or other programs influencing the main sound level of the volume mixer. You can fix the problem in a few steps.
- Skill level:
- Moderately Easy
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Restart your computer, then attempt to move the slider. The sound card or audio driver on your computer might have been locked, which in turn might have locked your slider. If so, restarting the computer will cause the Windows 7 volume slider to function again.
Restore the sound of any media player you have installed on your computer. Programs such as WinAmp and Windows Media Player share audio settings with other programs, so muting or reducing the sound on a media player will cause the Windows volume slider to mimic its settings.
Configure Windows 7 to not alter the sound settings when running certain applications. Windows 7 has a new feature that automatically reduces the volume when it detects the sound level as too high. Right-click the "Speakers" icon and select "Playback Devices" or "Recording Devices." Click the "Communications" tab and click the radio circle next to "Do Nothing." Selecting anything other than "Do Nothing" can cause the Windows volume slider to lower the sound level automatically when running certain applications.
Reinstall the audio driver for your sound card. Uninstall the current audio driver using the Windows Control Panel, then restart your computer. Insert the disc that came with your sound card and follow the onscreen instructions to install the audio driver for the sound card. This will fix the problem if the Windows volume slider was malfunctioning due to a corrupt audio driver.