I am unable to connect to the internet on my Apple laptop which used to work ok. I have not used it in a few months because battery would not charge. Now my other 2 devices, phone and desktop have continued to work and password is ok. My Wi-Fi is newer, and wondering what to do. My security cameras and lights also continue to work. I am under admin on laptop. My Apple is about 4 years old and never had problems until now.