wifi is on but is not connected to Network
My Mac was working fine but suddenly it stops to work with WiFi. Mac is showing "WiFi" on but unable to scan the network.
My Laptop:
Mac Model: MacBook; 13-inch, Aluminum, Late 2008
OS X 10.8.4 (12E55)
Processor 2 GHz Intel Core 2 Duo
MacBook, OS X Mountain Lion (10.8.4)