Same issue. Solution: Return it for a refund and buy a controller that is compatible. PowerA will not release a Windows 7/8/10 driver. The email I received from them stated the reasoning as: "We did not intend on it being used for anything other than the switch. We do have other compatible controllers."
So... fk them. Get a refund. Shame too cause the controller (BotW) is epic.
You can't blame them for that since this controller isn't made for PC.