We're going to need more information. What is the make and model of the keyboard in question? What version(not edition) of Windows 10 are you working with? Are you dealing with a desktop or a laptop? If a desktop, please list the specs to said system. If a laptop, please mention the make and model of your laptop. An SKU to the laptop will help us two fold. If the desktop is a prebuilt, the make and model and SKU is all we need.
If the BT adapter for your platform was an add-on, include the make and model of the adpater.