Problem activating windows 7 after a downgrade from windows 8

I bought a computer with windows 8.1 pro installed and I'm trying to downgrade to windows 7 pro.

  • The license key for 7 I am using is used on another pc downgraded, as well as the pc that it originates
  • I talked to 2 different people at Microsoft. The first says windows 7 must be uninstalled from the previous computer until I can activate it. Is this true? What the point of having a windows 8 license then?
  • The second person told me to contact the computer manufacturer to obtain a license of windows 7. This is not an option for me.

Any advice would be greatly appreciated.

Joren-

I bought a computer with windows 8.1 pro installed and I'm trying to downgrade to windows 7 pro.

  • The license key for 7 I am using is used on another pc downgraded, as well as the pc that it originates
  • I talked to 2 different people at Microsoft. The first says windows 7 must be uninstalled from the previous computer until I can activate it. Is this true? What the point of having a windows 8 license then?
  • The second person told me to contact the computer manufacturer to obtain a license of windows 7. This is not an option for me.

Any advice would be greatly appreciated.

Joren-

OEM Windows 8.0/8.1 Professional (Major) comes with downgrade rights.

Windows 8.0/8.1 Professional Retail doesn't.

For OEMS of Windows 8.1 a single system locked preinstallation SLP key is a unique 25-digit product key integrated in the UEFI BIOS.

For Windows 7 OEM SLP credits is entered from the installation media. This key works only if the markers in the BIOS are present, it is that the BIOS is checked by the OEM. For this reason, you need to an OEM license and support OEM installation.

See here for more details:

http://dellwindowsreinstallationguide.com/a-clean-install-of-Windows/a-clean-install-of-Windows-7/the-OEM-or-retail-license-and-product-activation-Windows-Vista-7/

Without details on your system and OEM model we cannot help you further.

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