Summarize the following:
Press the Xbox button on your controller to power on the controller. It's the Windows logo icon in the lower-left corner in the taskbar. It's the button that resembles a gear in the Windows Start menu. It's the button that has an image that resembles a keyboard and an iPod. It's at the top of the page, next to a plus sign. It's at the bottom of the Bluetooth setup menu, next to the plus sign. If your Xbox One controller is powered on, it should be detectable through the Xbox Wireless Adapter. Your Xbox One controller is connected to windows.  You can connect up to eight controllers using the Xbox Wireless adapter, or four with chat headsets, and two with stereo headsets.

Summary:
Power on your Xbox One controller. Click Start . Click . Click Devices. Click Add Bluetooth and other device. Click Everything Else. Click Xbox Wireless Controller. Click Done.