Windows 8.1 ISO was downloaded directly from Microsoft with the Windows 8 Update Assistant. This ISO has NOT been modified in any way.

It can be used to install Windows 8 with your own product key, But it's also very useful to install and then use the Microsoft Toolkit to activate.

If you do not own your own product key, You can install with these keys and then use the included Microsoft Toolkit to activate.

Volume 'Core' (Standard Windows 8.1) = M9Q9P-WNJJT-6PXPY-DWX8H-6XWKK
Volume 'Professional' = GCRJD-8NW9H-F2CDX-CCM8D-9D6T9

**Activation Instructions**
Ignore these if you have your own key.

1.) Run the included Microsoft Toolkit.exe
2.) Click the Windows Flag to start the Windows toolkit
3.) Go to the Activation tab
4.) Click 'Install' under Activator/Tool Selection
5.) Click 'Check' under Activation/Licensing Functions
6.) It should have 'License Status: Activated' in the Information Console