Windows 10: I'm looking for appropriate windows 7 edition to my product key

Hi Dudes.I really need your help.2-3 months ago I got computer with original product key.2 days ago I downloaded new Windows 7 but it was Win7 Pro.I wrote my product key but I got mesage from system about discrepancy.In my product key's paper there is a writing like that Windows 7 Home Prem OA.Which win7 edition do I have to download?Please, give a hand to me.

:)

 

Product key

Hi Megan,

A product key is used when activating a software.
To help us determine the appropriate troubleshooting steps that can resolve your concern, we'd like to ask the following questions:

• What product are you trying to activate?
• Are you looking for the product key to activate your Office application?
• Which version of Office are you trying to activate? To check this, you can perform the steps posted on this
  link.
• Are you looking for the product key to activate your Windows?

We look forward to your response.

 

WINDOWS IS ASKING FOR PRODUCT KEY

You can also skip this step and later Windows will automatically look for the machine signature on Microsoft servers to find if your machine was already having any of Windows 7, 8, 8.1 or 10 editions installed. It will then setup the respective edition of
Microsoft Windows 10 on your machine.

The following web page says more on the same topic and also teaches you how you can use the previously bought product keys from Microsoft, or wait until Microsoft searches for the machine signature on their servers to activate the appropriate edition of
Microsoft Windows on your machine, otherwise, how to buy a product key (which is a rare case anyways). http://www.howtogeek.com/244678/you-dont-need-a-product-key-to-install-and-use-windows-10/

 

Product key of windows 7 ultimate

If you buy a 10 Pro key yourself there are no downgrade rights to 7 Pro.

10 Pro has to come preinstalled by the OEM (Dell, HP, etc.) for Downgrade Rights.

Here is the information about Downgrade rights. It is an old Microsoft link which they removed but the information still apples>

Device Partner Center

Downgrade rights for Windows software
The following OEM versions of Windows software are eligible for downgrade rights.

[table][tr][td]Windows 10 Pro includes downgrade rights to:

• Windows 8.1 Pro
• Windows 7 Professional

[/td][td]Windows 8.1 Pro includes downgrade rights to:

• Windows 7 Professional
• Windows Vista Business

[/td][td]Windows 7 Professional and Windows 7 Ultimate include downgrade rights to:

• Windows Vista Business and Windows Vista Ultimate
• Windows XP Professional, Windows XP Tablet PC Edition, or Windows XP x64 Edition

Note Other OEM Windows 7 versions (for example, Windows 7 Home Basic and Windows 7 Home Premium) do not include downgrade rights.[/td][/tr][/table]

Note downgrade rights are only available as long as Microsoft provides support for that earlier version,
as outlined in the
Windows lifecycle fact sheet.

Steps for an end user to downgrade Windows software

To downgrade eligible Windows software, end users must:

• Purchase a PC preinstalled with Windows software.
• Accept the Microsoft Software License Terms.
• Perform the downgrade process to the eligible downgrade product using the media/key from a genuine, previously licensed OEM or retail product.

@@@@@@@@@@@@@@@@@@@@@@@@