Find and open: Start - Windows System - Right click Command Prompt - Click More - Select Run as Administrator Enter the following command in the pop-up command box;

 C:\>slmgr.vbs /upk The pop-up window prompts: "The product key has been successfully uninstalled" C:\>slmgr /ipk W269N-WFGWX-YVC9B-4J6C9-T83GX The pop-up window prompts: "Successfully installed the product key" C:\>slmgr /skms zh.us.to A pop-up window prompts: "The key management service computer name is successfully set to zh.us.to" C:\>slmgr /ato The pop-up window prompts: "Successfully activated the product"

Finally, check the "My Computer" and "Properties" display: "Windows Professional" Activated ”。