BF4 stops responding before it launches. "You were disconnected from EA Online (1)"

Try this:

1) Go to C:\Windows\System32\drivers\etc
2) Copy "hosts" file to your desktop
3) Open "hosts" with Notepad or any text editor
4) Check if you have anything like "127.0.0.1" beside any EA server and DELETE that line
5) Save and replace "hosts' into the original directory.