Click to download Battlefield 3 1%-2% first. Go to the Internet to find BF3 hard disk or find a CD directly. In short, download the game files and put them in the origin Games directory under the Origin directory (the directory can be set at will in Origin). Restart Origin again, and you will have it. If not, refresh the game and click Battlefield 3 to verify the game file. You go to Baidu and look at a lot of methods on the Internet.