let me explain

Since I'd heard that Windows 10 was coming for free, I been crazy waiting for the notification to appear on my task bar, but nothing would happen. Two months ago I was surprised with a "your windows is not genuine " notification. I was bummed, I couldn't believe it. Today I got the Windows 10 notification, but when doing the installing I forgot that I didn't have a product key since the pc did not brought one, but I finally found it in a sticker attached to the computer. Surprisingly my key was rejected. Now the sticker says is a product key for Windows 7 Home Premium, the windows version I have installed is Windows 7 Professional.

How do I solve this? I have no CD installation for windows 7 home premium.

What are my options and what can I do?

  • Sorry for my grammar, english is not my native language.
    – Techy Tec
    Nov 21, 2015 at 16:00
  • 1
    How you solve it is you a Windows 10 Home Version 1611 and install Windows 10. When asked for a product key you supply the Windows 7 Home license key you have. This will only work on a Version 1511 .ISO any version of the .ISO released before Nov-12-2015 will not work. You can also purchase Windows 10 Professional if you want to keep your personal files and applications installed.
    – Ramhound
    Nov 21, 2015 at 16:07
  • Please post the make and model of pc.
    – Moab
    Nov 21, 2015 at 22:04

1 Answer 1


Apparently your machine came with Windows 7 Home Premium preinstalled, and it was later upgraded with a copy of Windows 7 Professional which was either pirated or using a duplicate product key. You should however still be able to get Windows 10 from the OS that was previously installed on your machine. You should see this article for info, and contact Microsoft support.

  • 1
    Why the downvote?
    – dr_
    Nov 21, 2015 at 16:25

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