I am running Windows 7 Build 7100. As this will be coming to the end of its registration period soon I want to 'degrade' it (via upgrade) to a paid version of Home Premium. I have created a boot-able USB with Windows 7 however it will not allow me to 'degrade' (it requires Ultimate to be installed).

I do not want to have to do a reinstall as I will then need to reinstall all my software and drivers. Or, is here a way to copy drivers and programs across without reinstalling them?

Thanks,

Glyn