Hi,
Do try to uninstall/reinstall the Bluetooth driver first.
- Go to Device Manager and uninstal the Bluetooth driver.
- Reboot your PC and it should reinstall the driver automatically.
- If it will not install do download and install the latest driver there is from the manufacturers site.
- Next is to run Windows Update and install all the important updates there is that may be related to that issue.
- If all these will not work I would suggest running a complete factory reset.