How to activate a pre downloaded origin game

Well if you bought Battlefield as well, login to your account and you can enter your code into Origin, as you would to redeem any game. Once you do this is it will add BF3 to the games library. Then it will run a small "download" to verify the installation of the fiels you have already copied over (it's more of a scan than an actual download and should only take 5-10 mins).

After thisyou should be able to play the game without any problems. Hope this helps.

~Rick

It deleted the copied files to start downloading the game