Game Won't Start. Reason code= Missing DLL

Every time I try to start my game, an EA screen pops up and says Invalid License and Reason code= Missing DLL. I've tried repairing the files, restarting my computer, troublshooting problems. I'm reinstalling it now but I'm not sure that will work either.😕mileysad: I'm not great with computers and have no idea what it means.