To connect a Bluetooth keyboard, mouse, or other device. Turn on your device and make it discoverable. Turn on Bluetooth on your PC if it’s not on already. To do this, select the Start button, then select Settings > Devices > Bluetooth & other devices and turn on Bluetooth. Select Add Bluetooth or other device > Bluetooth.
: https://support.microsoft.com/en-us/help/15290/windows-connect-bluetooth-device

