Windows 10: How to get OEM windows 7 professional licence key which is not activating automatically?

Sir, I have have laptop HP 6460b which come which windows 7 professional, and now when I install windows 7 professional again it is not activating. When I tried to find OEM windows 7 key. It is only showing that Windows 7 OEM Marker present in firmware and I didn't get OEM but When I install windows 10 it automatically digital licenced when there is internet. I didn't buy windows 10 anytime also The back windows sticker is erasedHow please tell how to get OEM windows 7 key Thankyou Devanshu

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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.

 

Two OEM licence keys (different Windows versions) on one PC

Hello,
I'm in the process of building another PC and I want to know if it's possible for two versions of Windows to reside next to each other legitimately. I would have windows 7 and 10 as a dual-boot system. So if I buy OEM keys and activate them would one de-activate the other? I know that OEM licence keys are bound to the mobo and are irrevocable. Any advice is greatly appreciated. Thank you.