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no wifi connection on macbook

Help? I have a macbook pro and have no wi fi connection.I have had this mac for 4 years and up until a month ago never had a problem. I fear that I may have messed up my connections from poking around in the network preferences. Normally, if there is a wi fi available, the computer would show the availability, but the wifi icon is blank no bars.

Posted on Jul 30, 2013 6:28 PM

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no wifi connection on macbook

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