Problems with Wireless Communication
If you have trouble using wireless communication:
Make sure the computer or network you’re trying to connect to is running and has a
wireless access point.
Make sure you’ve properly configured the software according to the instructions that
came with your base station or access point.
Problem, Meet Solution
Make sure your Mac mini is within antenna range of the other computer or the
network’s access point. Nearby electronic devices or metal structures can interfere
with wireless communication and reduce this range. Repositioning or rotating your
Mac mini or the other computer might improve reception.
Check the Wi-Fi status menu (Z) in the menu bar. Up to four bars appear, indicating
signal strength. If the signal strength is weak, try changing your location.
Choose Help > Help Center, and then search for “Airport.” Also see the instructions
that came with the wireless device.