So, it seems that your Bluetooth service is not running. Please follow the following instructions:
- Press Windows Logo + R and then type “services.msc” in there and click on Ok.
- Find "Bluetooth support service" on the list and double-click on it.
- Find the General Tab and from there, change the startup type to Automatic. (If it's not)
- Then click on Log On Tab and choose “This Account”. Type here your account name or browse to find your account name. (The account that you are currently logged in with)
- Please remove both passwords fields and click on Ok.
- Restart your PC and try again.
If that doesn't work please tell me the model number of your motherboard or Bluetooth Dongle.