Step 1: You select the right key for your Windows 7 edition.

Here is the list of Windows 7 volume license keys:

Step 2: You go to the taskbar and type cmd => then you right-click Command Prompt and select Run as administrator

Step 3: You use the command “slmgr /ipk yourlicensekey” to install a license key (yourlicensekey is the activation key you got at step 1).

For example, I use Windows 7 Professional, so I type: “slmgr /ipk FJ82H-XT6CR-J8D7P-XQJJ2-GPDD4”

Then you Enter

Step 4: You use the command “slmgr /skms kms8.msguides.com” to connect to my KMS server.

Then you Enter

Step 5: The last step to activate your Windows you, use the command “slmgr /ato”.

Then you Enter

Done.