Re: (-5ef7ffff): The LSX server didn't respond
Hi @go7roo7 I see that you've already tried the command prompt thing (which would have been my first suggestion), updating Origin and several other fixes from Battlelog, here and other sites.
Did you try reinstalling Punkbuster and adding BF4/Titanfall to it? I've seen mentioned a few times that Punkbuster can cause this prob.
-Reinstall Punkbuster.
Go to C:\Program Files (x86)\Origin Games\Battlefield 4 and select pbsv.exe . Choose 'reinstall'
Install advice for Punkbuster https://help.ea.com/uk/article/punkbuster-technical-issues
Let me know how you get on and if you get it working again.