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1. First, check if the Bluetooth driver on the computer is installed correctly. Right click on "Apply" on my computer, then click on "Device Apply" and open "Universal Serial Bus Control". If there is a yellow exclamation mark in front of it indicating that the driver is incorrect, please download the correct driver from the official website or use the driver wizard to download it actively.

2. After acknowledging that the driver is correct, right-click on the speaker in the bottom right corner of the computer to select the "Broadcast Device" and select the "Broadcast" tab. You will see the connected broadcast device.

3. Select "Bluetooth earphones" from the available broadcast settings, then click "Set as default" below, and then click OK.

4. Place the mouse over the small speaker in the bottom right corner, and you will see that the speaker (bluetooth) is displayed as 100%. The sound is now output to the headphones.

5. Open a sound file randomly for testing, and then acknowledge whether it is correct.

Successfully connected computer Bluetooth earphones but no sound

matters needing attention

It is necessary to acknowledge whether the driver is installed correctly. If the driver is not installed correctly, this method may not be successful.

Article source: LED Bluetooth audio system http://www.zdchip.com