Windows 10: Windows 10 pro OEM Key activation problem

Hello Everyone, Recently I purchased an OEM key from the genuine key website for windows 10 pro activation, which windows 10pro, I already installed on my laptop one month ago using the setup provided on the MS website. Now when I entered the OEM key, which I received by genuinekeyin , in my activation section in my laptop settings, it shows the error message with the error code 0x803f7001. When contacting the customer care of a genuine key then he/she informed me that for the use of the OEM key you must have to do a fresh installation of windows 10 pro before the But a fresh installation

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activate windows 7 oem key

There is no difference between the OEM disc and the Retail disc with Windows 7. A retail disc will accept a OEM or Retail key, and vise versa.

If the OEM Key wasn't going to work with the disc you have, it would have stopped you during the install when it first asked you for the key, not during activation.

What is likely the problem is that, since the OEM version has already been activated once, it is failing activation again. Activate it over the phone using the option given to you on the failed activation screen, and you shouldn't have a problem activating it.

 

activate windows 7 oem key

Is there any way to activate a oem key in a win 7 wich has not been installed with the oem disk? The key is the one wich came with the computer and I installed version that matchs with it, so there wouldn't be any problem of using any other disk of win 7, but it doesn't activate.

 

Windows 10 Activation (Insider)

I bought Windows 7 Pro OEM key from G2Play.net for 12€ to upgrade to Windows 10 Pro - worked like a charm but be advised if you buy a OEM key you can not download the Win 7 iso from microsoft and have to get it elsewhere.