A few years back I gave my laptop in to fix a charging problem, and though that was resolved pretty easily, when I got it back I seemed to be having problems with logging on to Wi-Fi. What happens is, the Wi-Fi network that was already saved before the reparation does not connect automatically, I have to click on the Wi-Fi icon and choose the network to connect, and it will connect, but it will say
a keychain could not be found to store -network. So that's ok, but the really annoying thing is that with any new network I have to manually select it and then type in the password every time, and it will connect but still give me the same message.
I am using a mid 2012 MacBook Pro running OS X Yosemite 10.10.5.