Help! I just bought a used unibody Mac Mini, and the previous owner wiped the unit and did a fresh install of El Capitan prior to me buying it. So when I power it up, it wants to walk through the first time setup process. The problem is, I have a apple wireless keyboard, and it appears the bluetooth on the mac may not be on, as the keyboard is not being found (yes it has fresh batteries and is "discoverable"). So....It will not let me get passed setting up a main user, as that requires text input from the keyboard. How do I get the Mac to look for the keyboard upon startup? Help!