I have a MacBook Pro and all of a sudden  I cannot get wireless internet connectivity to my router or any other router, I get connectivity through the ethernet port but not wireless. This was working well till this morning

I  have a MacBook Pro and all of a sudden  I cannot get wireless internet connectivity to my router or any other router, I get connectivity through the ethernet port but not wireless. This was working well till this morning

BXB1905 wrote:
I tried the Apple diagnostics it did not work.
What do you mean it did not work!  What were the results of the diagnostic tests?
Have you contacted your ISP to determine if the problem is on their end?  
Have you changed your router channel?  Sometimes this resolves wireless problems.
Your profile confirms you are using Lion.  Check out the following: 
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
Configuring 802.1X in Mac OS X Lion and Later

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