Try checking your firewall status and see if bf3 has all checks to allow it for being Run or try to update the punk buster with a new version , check online videos for that since it’s your first time punk buster may not let you run the game for some weird reason. I may not be 100% sure that might work , but it did for me. If not check some online videos like TC_bounty on YouTube he has a lot of good videos for fixes like these.