Apple laptop keeps saying wifi has "no IP address"
My wife's Airbook, which is 2 years old, keeps dropping the wifi connection both in my house and in my son's house, saying "no IP address." The only way I can get it to connect is to reboot the router, which is a pain. We have 2 iPhones, a desktop Mac, and an iPad. None of these devices have any issues with our wifi system. There is clearly something wrong with the settings or the hardware in the laptop.
Any ideas?