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I have a 17" Early 2008 Macbook Pro running lion 10.7.2. And about 3 weeks ago, this problem started occurring where my interent would stop working randomly. I go to toggle the Wi-Fi on and off, but when I try to turn Wi-fi on, it does nothing and the wifi icon remains an empty wedge.

Trying to turn Wi-Fi on from System preferences also does nothing - same empty signal.

But if I restart my Mac I can get on Wi-Ffi normally and it will last from a couple hours to a couple minutes till it drops again and I need to restart to get back on.

I searched all over the web for a solution and tried to

  • reordering wifi above the other service in System Preferences
  • deleting 'SystemConfiguration' folder in under library>preferences
  • reinstalling Lion from recovery disk
  • Reset PRAM
  • Reset SMC

Nothing works. And I haven't found anyone on the web with the same problem.

Has anyone seen this problem before? Is it a Lion issue? Or is it hardware, like a messed up airport card?

Any help would be so greatly appreciated.

UPDATE

For anyone else who may stumble upon this issue, I've been dealing with this issue for a couple weeks and took it to the genius bar. After having me completely wipe my harddrive and do a fresh install of the OS and manual install of all my programs, It is conclusively a hardware problem. And the fix is to have your airport card replaced. Which is about $120.

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It's probably hardware, but try running /System/Library/CoreServices/Wi-Fi Diagnostics.app and watch the console log for message indicating an issue with the networking or en1 device. – bmike Nov 15 '11 at 23:54
This problem is definitely hardware as the update to the original post says. I updated from Snow Leopard to Lion thinking that it may have been a software problem, but it persisted well after that. I ordered and installed a replacement Airport card and have not had the problem since. If you're comfortable replacing it yourself, you can get the part for $10-20 online. Powerbookmedic.com has it: powerbookmedic.com/… – rbritton Feb 23 '12 at 22:46

1 Answer

My macbook (late 2008) refused to get wifi from airport some months ago. I think I have found the solution - I got the MacCleasne app - run "scan and delete" with it (loaded recommended set) and my macbook keeps wi-fi again (several days now, without a single drop). Hope it works for some. Regards, Pawel

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