Hello, thank you for reaching out to Microsoft Q&A.
Are you able to pair or connect other Bluetooth devices, such as your mobile phone, to your Windows PC? Or are you able to pair your Bluetooth headphones with your mobile device?
This will help us confirm that your Bluetooth headphones are working properly.
Troubleshooting steps:
Run the Bluetooth Troubleshooter:
Go to Start > Settings > System > Troubleshoot > Other troubleshooter> Bluetooth and select Run.
Once the troubleshooter is finished running, restart your computer and pair your headphones again.
Another method, reinstall Bluetooth drivers:
- Disconnect/remove your headphones from the Bluetooth devices list.
- Then go to Device Manager and expand the Bluetooth section.
- Right-click your generic Bluetooth driver, such as Intel Bluetooth driver, select Uninstall device > Select 'Attempt to remove the driver software for this device' check box, and click Uninstall.
- Once uninstalled, restart your computer and pair your Bluetooth headphones.
- Set it as the default audio output device.
See if it is working.