
The major change in the Windows 8 from the Windows 7 is that, in while installing Windows 7 you can skip the license key portion and can enjoy 30 days free trial, but this time Microsoft has taken action to control piracy. Now its essential for you to give the product key before installing Windows 8 there is no skip product key option in Windows 8.
But if you want to install final version of windows 8 now, we get a trick to install windows 8without product key. The trick was found by WindowsValley.
Note: This trick does not mean that you can use Windows 8 without license key, this will enable for installation without keys.

- Windows 8 ISO
- Tool to extract ISO files
Step 1: Firstly you will need to download and extract the ISO file of Windows 8 RTM version you have. For this purpose download WinRAR click here
Step 2: Open Notepad to create a file with following code structure mentioned below and save ei.cfg in Sources folder.
[EditionID]
{Edition ID}
[Channel]
{Channel Type}
[VL]
{Volume License}
This configuration file (EI.cfg) determines which edition of Windows to install and which license to use during Windows Setup. Here {Edition ID} must be a valid Windows Edition ID such as Core, Professional and Enterprise. {Channel Type} can be OEM or Retail. {Volume License} can be 1 (True) or 0 (False). So a sample file would be.
[EditionID]
Professional
[Channel]
Retail
[VL]
0
Step 3: Now create the bootable ISO either using DVD or USB drive and install it. With the help of WinUsb Maker to download click here