Let me explain my problem and the background first. I picked up a HP laptop from Germany on a business trip there and it came with Windows 7 Home Premium 64 in German. There was no option for an English edition, which was super. Managed to fumble through for 3 months, but then went out and picked up a retail copy of 7 Ultimate 64 thinking an upgrade shouldn't be a problem.
Well, long story short, the setup tells me that an upgrade is not possible as the "Language does not match"! With 400GB+ data and a whole lot of installed apps and settings, I really don't want to perform a clean install. REALLY don't. Backing up the data via USB is no problem but the apps and settings and configurations and addons .... are a different story all together.
My question is -> Considering Ultimate contains the MUI's for 36 languages as part of the package, is there no way (reg tweak / ini edit) to accomplish this upgrade from German Home Premium to English Ultimate?
I'd appreciate the "Clean Install" to be an absolute last resort...
Thanks for your time.