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Hi, I'm Bernard. I'm happy to help!
Kindly try to change the default audio output of your device:
Go to Settings > System > Sound > Choose where to play sound
Then select your Bluetooth device and test it.
Another option is to click the audio icon on the taskbar, then click the icon to select the sound output, and select your Bluetooth device.
For reference: https://www.elevenforum.com/t/change-default-sound-output-device-in-windows-11.1856/
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