Simply click on the link http://bit.ly/windows8txt
You will find a code on the webpage. Copy and paste it in a notepad.
Go to File, Save the document as “Windows8.cmd”
Now right-click on the saved file, and run the file as administrator.
You may also use EZ-activator software to generate Windows 8 key and activate Windows 8 OS but the success rate of the same is optimally low and generally not recommended. Hope you got Windows 8 Product Key those are 100% working.