This tutorial is based on BlueStacks 3 and will help you to troubleshoot No-sound issues.
1. a) Click on 'Drop down' icon on the top bar.
b) Click on 'Volume Control' and maximize it by clicking on '+' as many times, so it will grayed out as shown below.
2. a) Go to Windows task-bar, right-click on volume icon. Click on 'Open Volume Mixer'.
b) Make sure that the Speaker icon of 'BlueStacks Service' is not mute. Also, you may maximize the volume of 'BlueStacks Service'.
3 a) On home screen, click on 'System App' icon,
b) Now click on 'Settings'.
c) Now click on "Sound".
d) To check Volume settings, click on 'Volumes'.
e) Now check volume on the speaker icon. It should be maximum.
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