Windows 8.1 Enterprise Evaluation to Windows 8 Final (OEM)

So for the past week I've been putting together my gaming rig, and I finished the day before yesterday. My copy of Windows 8 was scheduled to arrive two days later (today), and I got hasty and just installed Windows 8.1 Enterprise Evaluation via a USB drive.

My official copy arrived today, and I'm wondering if there's a way to activate/upgrade (or would it be downgrade since it's 8.0?) without having to reinstall the OS altogether - I've already set up a lot of software that I'd prefer not to redo everything, although I do have a storage drive if a complete reinstall is necessary.

Any help would be greatly appreciated

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]

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

As the new MOBO's now have a uEFI/BIOS firmware.
How to install Windows 64 bit on a uEFI/BIOS firmware:
2c) http://www.eightforums.com/tutorial...e-firmware-interface-install-windows-8-a.html


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

For USB:

x32
USB Windows 7 Installation Key Drive - Create - Windows 7 Help Forums

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

Take a look at those posts for more info.

http://www.eightforums.com/tutorials/18309-windows-8-windows-8-1-iso-download-create.html

How to download Windows 8.1 ISO with a Windows 8 key.
http://www.eightforums.com/installation-setup/33164-how-download-windows-8-1-iso.html

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

No, not that I am aware of. You can't upgrade from Enterprise to a consumer version. You'll have to reinstall.