Wi-Fi is no longer under Mac OS X you can do
Please follow the instructions below to be able to use the Wi-Fi use:
- First of all, check whether there are Updates for your Mac. This is the case, install this.
- Make sure that the cabling to the Router is impeccable and all of the cables are fixed seats.
- Disconnect the power supply of the router for about 30 seconds. Then try again to connect.
- Make sure that the Firmware of the router is up to date.
- Connect to the Test using a LAN cable. Should this not work, either your Router or the network card is defective.
- You try to connect another device to your Router. Also this does not work, your Router is defective. Otherwise, the Problem is with your Mac.
- In this case, an Apple Partner that can replace the faulty network card.

Mac OS X: Wi-Fi is defective
This practical tip is based on Mac OS X. In the next tip you will learn how to on the Mac a Wi-Fi printer set up.