When I launch BF2, I get the small BF2 art thingie, and then the screen blinks grey, black, grey, and then I'm at desktop as if nothing happened. So hey, if you know how to fix THAT sight-unseen, that would be swell. (Conversely, the BF2 demo which I never uninstalled launches fine. Methinks a patch fubarred my install.)
In the meantime, here I am in Greece, with a CD case full of games (BF2 was a DVD, I think/hope with just one disk?? Anyway, it says "Install Disk"), but all of my docs, boxes, manuals, papers, things that weigh, you know, a bit, are back in a friend's basement in Ann Arbor.
So if I reinstall...i gotta find my CD KEY, registry key, whatever the heck you call it (at least I think BF2 has one of those, yes?) somewhere in my existing system registry.
I know this is possible. I think it's possible. Heck, I'll need you to tell me what to do in really small words. Really, small words.
I finally found an actual Greek Server, where my ping won't be such utter crap that I start crying. And I'd like to play. Soonish. 
Your help will be greatly, greatly appreciated.
You are my hero.
edit: Um, did I ever mention the thing about small words?
I went to the specified place, but the data string there is like 400 characters long or so.
Um.
How do I get that thingie back to looking like a registry key? Can you look at yours and compare to your real one, and see what I'm talking about?
Xbox One: GWJRoo
Origin: gwjroo
Steam ID
I'm at work so I can't look at mine; I did find this on gamespy though, see if it gets you what you need:
Not so much, the character string I have starts with x9392, and then continues for 400 characters, with lots of strings of "000000" and similar thrown in...
Who knows, maybe that's why my BF2 is broken.
Xbox One: GWJRoo
Origin: gwjroo
Steam ID
I wonder if EA support would decrypt if for you if you send them that encrypted registry key.