When it goes through sequencin gon the bottom...IE: "Joining server..." Loggin in..." when you see the BF4 icon appear in the task bar wait a few secs then click it. It will
bring up full screen.
Maybe you are missing file MSVCR100.dll? If so www.microsoft.com/en-us/download/details.aspx?id=14632 try this as some people report that it fixed a problem