Windows 10: how do i autivat windows pro on my computer it hade windows 7 pro but window 10 did not...

i got my windows 10 pro off the windows dowenload pager thainking it would work with my key frome windows 7 pro but it did not it instald but did not auctivate know it demads i get a key frome the store but that will not oppen and im at loss i ewas told as long as my windows 7pro key was good windows 10pro would mauctivat microsoft came in to my computer and auctivated it but it only lasted a week whats up how do i fix this i can not aford to go out and buy a new windows

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Clean Windows 10 (?PRO?) install

I have bought a legit "Windows 10 Pro" key of a key website. It is legit since i'm currently using it for over a year now. I currently have Windows 10 Pro installed on my PC and I want to do a clean install. I just can't find the windows 10 Pro download in the tool. But if i could use a windows 10 pro key with a normal windows 10 install, I'll be good to go.

 

Windows 10 pro

I need to change my motherboard, have windows 10 pro. When i google how to it says go to activation then add an account, my issue is there is no add an account option under activation? Or am I in the wrong window?



Not sure how to proceed, ive googled it and the same results. Do I have an OEM or? On the disk sleave it says OEI DVD?
The COA says windows 10 pro for OEM software

 

Trying to reinstall Windows 7 Home premium from Windows 8 Pro

Hi, I have just installed Windows 8 pro and I don't like it. I tried it for a day but I think it has too many unnecessary functions, which drives me crazy. I tried to re-boot with Windows 7 disc in it, but I am unable to select anything using keyboard and mouse on windows 7 installation step (where i choose language and input). Please help.