When there is no system prompt sound when the Windows 7 system is turned on, but there is sound when playing MP3, it may be due to a problem with the sound scheme setting. You can learn how to set it up through this article.
The specific operations are as follows:
1. Click the control panel in the start to enter:
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2. Click Hardware and Sound:
3. Click Change System Sound in Sound:
4. If the sound scheme is set to silent, it means there is no system prompt sound. You can set other sound schemes in the list: