Hi Louis,
Bluetooth headsets like the JBL 510BT use different audio profiles depending on the task:
A2DP (Advanced Audio Distribution Profile) is used for high-quality stereo output great for music and videos.
HFP/HSP (Hands-Free Profile / Headset Profile) is used for microphone input but it lowers audio quality to enable two-way communication.
Windows often defaults to A2DP for playback, which disables the microphone because A2DP doesn’t support input. So while your headset sounds great, the mic isn’t being activated unless Windows switches to the hands-free profile.
What You Can Try is:
Check Sound Settings
Go to Settings > System > Sound.
Under Input, make sure your JBL headset is selected.
If it’s missing, Windows may be using the wrong profile.
Use the Hands-Free Profile
Open Control Panel > Hardware and Sound > Sound.
Go to the Recording tab.
Look for JBL 510BT Hands-Free Audio.
Right-click it > Set as Default Device.
Do the same in the Playback tab if needed.
This forces Windows to use the profile that supports the microphone.
Reconnect the Headset
Remove the headset from Bluetooth devices.
Re-pair it and check if both playback and recording profiles appear.
Update Bluetooth Drivers
Open Device Manager > Bluetooth.
Right-click your Bluetooth adapter > Update driver.
Restart your PC after updating.
Let me know how it goes, Happy to help!