It's not a firewall problem, I promise. It wouldn't give a black screen. Did you try...IDK uninstalling and reinstalling it?
And, asshole (i say that as nicely as possible), there is no "piracy protection."
You can install the game on as as many computers as you like. There is no Digital Rights Management.
Impulse, if that's what your referring to, just allows you to get updates easier, and allows for the developers to give you updates more often.
Judging from your attitude, I would assume that you've not reached 15 years, but then that might be an insult to people of that age.
Your insolence, if decidedly more widespread, would drive me to condemn humanity. Your ignorance is what i've grown to expect.
/rant