There is a small speaker icon in the lower right corner of Windows Vista, why is it still

There is a small speaker icon in the lower right corner of the Windows Vista system. Why can't I make a sound?

I clearly saw the icon of the small speaker in the icon area at the bottom right of the desktop, but the Windows Vista system can't play a little sound, what should I do?

Right click on the small speaker icon-> playback device.
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播放设备
The green device is the default device, and make sure that the speaker is set as the default device. If there is no green tick on the "Speaker", right-click the speaker-> set as default device-> OK.
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设置为默认设备
Try again if there is any sound.

Yi Baodian tips: the speaker can not emit sound may also be caused by other reasons, such as: the speaker is set to mute (a symbol will appear on the small speaker icon), the sound card, the line, the speaker itself (the speaker can be connected to other Try it on the computer, okay) ...

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