Bluetooth not working, even after module replacement

I have a MacBook Air early 2017 where I can't activate Bluetooth in system settings (or in the menubar). When clicking the switch nothing happens, stays gray.

1. I have tried to reset NV-ram and SMC.
   (Other reset options for BT is not available/doesnt show up.)
2. There is no com.apple.Bluetooth.plist in /Library/Preferences/ to remove
3. Wifi is working fine.
4. Same issue even after replacing Wifi/BT module.
   Wifi is working fine. Unable to activate BT.
   
   Please bring up you ideas on what's the problem or if you have any solution or idea on what could solve the problem.
   Thanks!