MacBook has no Wi-Fi: the Router Is actively ?
If the MacBook does not connect to a saved Wi-Fi, not the fault, necessarily, in the case of the computer. You start with the Troubleshooting in your Router:
- Make sure that your Wi-Fi Router is active.
- Check the network cable connections between the network components such as wireless Router, Modem and Switch.
- Place your MacBook in the immediate vicinity of the router and check to see if the Problem still exists. For example, the shielding can to the end of building the radio connection between the Router and the MacBook.
Wi-Fi forget: First simple solutions on your Mac
If you were able to determine at the time of the previous examination, there is no error, check now on your MacBook, the following:
- Check whether Mac OS X is up to date and install if necessary. the necessary Updates.
- Disable the Airport Adapter and activate it again. To do this, click on the Airport icon in the menu bar and select the Option "disable Wi-Fi". Click the icon again and select "enable wireless". The connection is now restored, it may be, it is recommended, nevertheless, to the following steps.
Wi-Fi disable/enable
If the MacBook does not know his Wi-Fi: Possible solutions to your Wi-Fi Router
For this work a direct connection with the Router is required. To do this, connect your MacBook to an Ethernet Adapter via cable or via a USB interface with the Router. Then, open the Router menu in your Browser.
- If the Name of your wireless network (SSID) is hidden, make it visible again.
- You can change the SSID and select a unique name that will be used on any Router in the vicinity.
- You enable the automatic Channel selection in the Router. The manual assignment should you choose only if it is excluded that another Router in close proximity to the same channel.
Magic Reboot for the wifi: network and password in the keychain-delete
In addition, it can help the network simply create a new file. You have to delete the network first.
- You go to the "settings" on "network". Select "More options".
- In the tab Wi-Fi you will now see a list of known networks. Click the network and delete it by pressing down the [- ] Button.
- To delete all traces of the network, you need to remove the password from the keychain.
- Open "Programs" -> "Utilities" -> "Keychain Access".
- Enter in the Spotlight search window the term "Wi-Fi".
- Now click with the right mouse button on the network that you have previously deleted, and select ["SSID-of-your-Wi-Fi," delete"].
- Confirm the safety query with [Delete], and then enter your password.
- Finally, click in the column "bunches of keys" right-click on "System" and select "keychain System protect".
- Create your network now restart and check whether the Problem persists.
The keychain edit
Used Wi-Fi networks sort by priority
If you sign up your Mac in several wireless networks, you can specify the order in which Mac OS X is trying to connect to these networks. As the networks according to a priority sorting read here
