Restore network on Mac [closed]

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http://serverfault.com – I used to have Snow Leopard installed on a MacBook Pro and everything was fine. After upgrading to Lion network problems started to happen. Most of the time the network service can’t start (so I do not have wired nor wireless network access): There is no network icon on the top bar Moving the mouse pointer to the top bar shows the wait cursor (the rainbow cursor) If I try to enter to network settings then the network window freezes, not even showing the network adapters. Usually I had to reset the computer 3 or 4 times until I get network again, but recently not even that works: the netw (HowTos)