Solved overwrite OEM windows with a different version of retail w

I have recently bought a PC with pre installed windows 8. I have bought an SSD and am trying to install a Windows 8 pro N on it. however this is proving much more difficult than i imagined.

I downloaded windows assistant from microsoft and entered my key. It downloaded the OS and went on my usb pen fine. Though when i boot from the USB i get the following error "the product key entered does not match any of the windows images available for installation"I have done some research and cant find anything helpful.

Please help i have been trying to do a clean install of ages

thanks

You using a Windows 8 Pro N on a Windows 8 Core Pre-installed, the installer can see the embedded Product Key in the UEFI/BIOS firmware. You need to use a Windows 8.1 Pro N installer.

To clean install:
1) Clean the HD Drive, using Step one in this tutorial:
SSD / HDD : Optimize for Windows Reinstallation - Windows 7 Help Forums
than
[DEL]2a) Clean install with the OEM manufacturer's Recovery Disk.[/DEL]

[DEL]2b) http://www.eightforums.com/tutorials/2299-clean-install-windows-8-a.html
[/DEL]

2c) http://www.eightforums.com/tutorial...e-firmware-interface-install-windows-8-a.html


For USB:
x64
http://www.eightforums.com/tutorials/15458-uefi-bootable-usb-flash-drive-create-windows.html


http://www.eightforums.com/installa...retail-windows-8-1-windows-8-product-key.html

edit:

Note: The PID.txt file is no longer needed.

You have an OEM computer with UEFI firmware (BIOS) embedded Windows 8/8.1 (core) product key and you try to install Windows 8.1 Pro.

Installation fails with error message: The product key entered does not match any of the Windows images available for installation. Enter a different product key.

To resolve this problem, download the latest installation media. The error message does not appear in this new installation media.

1. Download Windows 8.1 Pro installation media (see this link for help).

2. Boot the computer from your Windows 8.1 Pro USB/DVD.

3. Enter your Windows 8/8.1 Pro product key (see screenshot below).

Thanks, i did PID file and it worked.