I'm getting rid of a MacMini late 2009. I used Recovery and Disk Utility to erase the disk, and now I want to use Recovery to reinstall El Capitan. I try to do that, but it complains that the the wifi is not connected. No prob. I select my router, and a pane comes up asking for the password. I try to type in a password, but no text appears. I can't type in a password for my wifi! This is nuts. Can someone tell me how to connect to my wifi after a disk erase?