Activating previous Windows 10 upgrade on new mobo


  1. sorethumbs
    Posts : 1
    Windows 10 64 bit
       New #1

    Activating previous Windows 10 upgrade on new mobo


    Hi All
    A little advice please..

    I have previously built a pc for a friend and used a Windows 7 pro licence key which activated fine. They then went and did the free upgrade to get the pc upgraded to Windows 10 Pro.

    Now it seems their pc has had its motherboard fail and I will be looking to get them a replacement. It will no doubt require a reinstall of the operating system so here is where I'm a bit confused.

    I have the original Windows 7 serial still and also the serial that was generated after the upgrade to Windows 10.

    What is the best way to get their Windows 10 back and activated on a new motherboard. Do i reinstall the old W7 and then have to upgrade to W10 like previously or do I go and install W10 and enter the old Windows 7 key (or the newer W10 serial)

    Rather confused...
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  3. Samuria
    Posts : 8,111
    windows 10
       New #2

    Welcome to the forum. I assume the hd is ok and will go back in with the new board its a matter of seeing then if it stays active assuming it boots ok. A lot depends how different the MB is if it the same or simliarit may just work. If you need to do a clean install then you skip the request for a serial and see if it works as activation is held on MS servers
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  4. NavyLCDR
    Posts : 18,432
    Windows 11 Pro
       New #3

    This is how Microsoft says to do it :
    https://support.microsoft.com/en-us/help/20530

    The Windows 10 Pro product key you got from the upgrade is VK7JG-NPHTM-C97JM-9MPGT-3V66T and you cannot use that by itself to activate Windows 10 on a new motherboard that has never had Windows 10 activated on it before.

    There is a good chance the Windows 7 product key will work to activate either Windows 7 or the matching edition of Windows 10.
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