Airport - Self Assigned IP

Hi
Basically using Snow leopard and my MACBOOK (2009) won't connect to the net. It connects to the network but I can't get on the internet.
I've seen that lots of people on the internet have had these problems with Airport.
I've tried to use DHCP renewal, and I've emptied my keychain preferences, Ive tried manual addresses.
If anyone can think of anything that would be great.
P.S both the Mac and the Wireless Router are working fine. Other computers in the house are connecting perfectly.

Try the following, in order, until (hopefully) resolved:
1a. Delete Preferred Network(s)
System Preferences > Network > AirPort > Advanced > AirPort tab
Under "Preferred Networks," delete the network(s) you regularly use from the list.
1b. Delete AirPort Keychain Entries
Launch the "Keychain Access" application located in Applications/Utilties.
Click on the "Kind" filter at the top, and look for any "AirPort network password" entries...and delete them.
1c. Add Preferred Network(s)
System Preferences > Network > AirPort > Advanced > AirPort tab
Add the preferred network(s) using the "+" button.
Restart or log out then back in.
2. Move System Configuration Files
(Note: You will have to reestablish your network connections settings.)
Go to /Library/Preferences
Move the SystemConfiguration folder to the desktop.
Restart your Mac. (Note: OS X will rebuild the files that are now sitting on your desktop. If this doesn't resolve the issue, you can move the folder back to it's original location.)

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    Message was edited by: BobTheFisherman

  • Airport " Self Assigned Ip Address" Issue SOLVED

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