First download the Windows 8 kms activator from above download button.
NOTE: Download all files to your computer. You can download all files in a single ZIP file by clicking on File->Download
Open folder step 1
- Run Windows kms Activator as administrator
- There would be a button, press on it.
- Wait for the process to complete and let your PC restarts automatically (If not then restart it manually)
- Voila! your Windows is “activated”
Windows 8 Professional
Windows 8 Professional N