Have a new mini. It says connected to keyboard, enter code, press return, then nothing happens?

Hi, sounds like you might need a USB Keyboard to get it going.

You have 3 minutes to get that wireless keyboard connected before it will turn itself off to save battery life. Although BDAqua may be correct about the need for a wired USB keyboard, follow the steps in the linked Apple wireless keyboard article, and see if you can get it configured.

Change the keyboard batteries. Had the same problem until i changed the batteries .

If the keyboard was ever paired with another device, unpair them then go through the process again.