In the reboot phase, the display shows 'Adding features 15% complete', then it says 'Failure upgrading Windows. Preparing to retry', then 'Failure upgrading Windows Reverting changes'
If I then launch the desktop, I see the 'Add features to Windows 8' window ope i386n and it is displaying this message
'Couldn't add features
Your previous edition of Windows has been restored, but you should contact Microsoft Support'
Any idea why I cannot upgrade from Win8 to Win8 Pro?