Why will my MacBook no longer log in to my wifi?
I no longer appear to be able to log on to my wifi network.
I have deleted historical link and re-entered the password but do not get a valid IP number in the systems set up.
I have set a valid IP manually using the DHCP tab but while Mac appears to log on to network it will not open any Internet applications.
Anyone any ideas?
MacBook Air, OS X Yosemite (10.10.2)