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Windows 10 product key not working after clean install
I installed windows 10 on top of Windows 7, but then did a clean install afterwards from an image on a USB drive.
I wrote down the product key from the first install after scraping it with a program.
The clean install of 10 went fine, but it will not accept this product key. Im guessing this is because I used it on the old install, but that install no longer exists. What do I need to do to have this key work? I have email confirmation of upgrade (assuming that actually means anything).