Hi LHAI,
None of the methods suggested by Dan worked.
I tried all 4 of these methods (listed below) - something obviously worked. I think personally it was METHOD 1 as one of my Bluetooth services was not running, so I ran it. Also as in METHOD 4, I updated all my bluetooth drivers & as in METHOD 3 I connected via the Action centre rather than via Bluetooth settings.
Good luck!
Method 1: Check services.
- Open the Run dialog box by pressing the Windows key and the R key together.
- Type SERVICES.MSC and hit the Enter key.
Check each of the following services and ensure that they are in running state. You may also restart the services if they are already running.
- Bluetooth Support Service
- Bluetooth Audio Gateway Service
- Bluetooth Handsfree Service (this service may or may not be available on your computer depending on the Windows 10 version).
- BluetoothUserService_8c55026
Method 2: Check if the headset is in disabled state.
- Right click on the Volume icon (bottom right corner) and select Sounds.
- If the headset is not listed under the playback devices, right click on the empty space of the window and select Show disabled devices which should list the device.
- Right click on it and select Enable.
- Again right click on the device name and select Set as default device.
Method 3: Remove and repair headset.
- Go to settings->Devices->Bluetooth & other devices.
- Under Bluetooth, select the device you’re having problems with, select Remove device and click Yes.
- To re-add the device, go to Action center, select Connect and then select your device.
- Follow any more instructions that might appear. Otherwise, you're done and connected.
Method 4: Update/Reinstall Bluetooth drivers.
If the above steps does not fix the issue, you may try updating or reinstalling the Bluetooth drivers of your computer. I would suggest you to refer the article on Fix Bluetooth problems in Windows 10. Kindly refer section '6' to update your system's Bluetooth drivers. You can also refer the subsection Audio under Troubleshoot problems with Bluetooth accessories and check if it is helpful to you.