Hi, My laptop was sold with Windows 10 Home pre-installed and activated. I wanted to upgrade to Pro, so I installed Windows 7 Ultimate, activated with Daz and let it update. When I let Windows activate itself after first installing 10 (i.e. the update immediately from 7 Ultimate) all is good and I have Pro edition. However, all subsequent re-installations of Windows give me the Home edition again. I had assumed that Microsoft would consider the new HWID (for Pro) as an over-write of the original HWID (for Home) - but I guess I was wrong? Does anyone have any idea how to get around this - did a quick search but couldn't find anything specific to my problem. I'm hoping to get this sorted before 29th, so I can have a 'legit' version of W10 Pro. Thanks in advance.