Wifi will not turn on after updating to 10.8.5
I updated to Mountain Lion 10.8.5 on my 2008 model MacBook and now I cannot turn on the wifi. I go to System Preferences, Network then click on wifi. I click Turn Wi-Fi On but it doesn't respond.
I've tried three things to fix it:
1) reboot
2) Deleted all Network settings and created a new WiFi profile
3) Went to Apple, About This Mac, More Info...., System Report, Wifi
There is a lot of information in this window but the status says Off.
Any advice for me to get my WiFi working again?
MacBook