Macbook won't connect to Wifi ; Not a router problem

[bucherman7]

So I have the black Macbook that came out in 2006/7 and it has stopped connecting to the internet. I have been having some random issues with it over the last couple months like some pages just stopped loading or it would take an extra long time to connect. But now it isn't connecting at all, to any Wifi. I have my PC connected and my iPhone too, but the macbook won't connect at all. I have tried it with 3 different routers and it all the same thing, it loads for about a minute and then the "!" pops up saying "no network connection" I have tried resetting the mac, turning the airport on and off, and forgetting the remembered networks. Nothing seems to help, and it has to be a problem with the Macbook itself at this point because it won't connect to anything.

Any help is appreciated

[Satcomer]

Try to Reset Your PRAM to see if that helps.

Plus if the Reset Your PRAM doesn't work it might be worth to try to reset the Airport card. This is drawn out process that you must follow the steps in order:

1. Open system Preferences->Network pane, highlight the Wi-fi airport card and in the right hand pane turn OFF the airport signal. Then quit System Preferences.

2. Navigate to the folder /YourHardDrive/Library/SystemConfiguration/ and find the file: com.apple.airport.preferences.plist and drag to the Trash can (but don't Empty the Trashcan just yet.

3. Immediately Reboot to rebuild that file in the /SystemConfiguration/Preferences/ file.

4. Upon the reboot go back into System Preferences->Network pane and add you wireless card back and rejoin your network. In the right hand pane mark sure you push the 'Apply' button tom save.

Good luck.

[Satcomer]

Any news that is fixed?

[HomelyPoet]

In "System Preferences" in "Network" in "Advanced" under "TCP/IP";
"Configure IPv4:"
And
"Configure IPv6:"
How are they set (Using DHCP, Using BootP, Et Cetera)?

[bluesdude]

This is a dumb question - have you tried a wired connection from your Macbook to your router? If so, were you able to connect to the internet?

Just out of curiosity, which router brand are you using?

Cheers,
Simon.

[MisterMe]

This is a dumb question - have you tried a wired connection from your Macbook to your router? If so, were you able to connect to the internet?

Just out of curiosity, which router brand are you using?

Cheers,
Simon.

You do understand that the last question post was two months ago. I assume that the poster solved his problem long before you rimmed him out.

[bluesdude]

You do understand that the last question post was two months ago. I assume that the poster solved his problem long before you rimmed him out.

Thanks for pointing this out! I am Just curious if the answer given by Satcomer addressed the issue.

[Satcomer]

Thanks for pointing this out! I am Just curious if the answer given by Satcomer addressed the issue.

I posted this fix because a .lot of Mac users reported across the internet that resetting the Airport Preferences does seem to help when problems occur during OS X upgrades. Apple seems to change the network stack on in OS x between every OS X major upgrades. IMHO old Preferences files can mess up during OS X upgrades.

Take in account the post I did about [HowTo] Make 10.5.x speak to a non-functioning D-link wireless router .

As a Cisco Network Administrator I have many upgrades in wireless stacks over the years to make your head spin. Apple seems to try to be up-to-date during OS x upgrades. That is why I urge people not to Migrate their wireless settings during an OS X major update (like 10.6 to 10.7).

I hope this can help people to see where i coming from when I tell them how to try to fix wireless network issues.