method 1: 1,close the antivirus software, 2,open the "widows ket.txt", and try the serial key in there one by one,once it is okay, and congratuations, your windows was activated. methos 2: 1,close the antivirus software, 2,uncompress "Ratiborus.KMS.Tools.rar", 3,click the "KMSTools.exe",run it,done.