Can I migrate Windows 10 system disk to a different OEM licence?

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  1. Megahertz's Avatar
    Posts : 2,377
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #21

    Your old drive was probably set as legacy and your new is trying to boot as EFI.

    Please give us the specs of your old an new computer.
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  2. itm
    Posts : 53
    Windows 7
    Thread Starter
       #22

    OK so I managed to resolve the issue by booting to a Windows 10 Pro disk and using the repair option. Windows started up but, as predicted, is not activated. The licence status says: "We can't activate Windows on this device because you don't have a valid digital licence or key., select Troubleshoot below. Error code: 0xC004C003

    So I ran the troubleshooter, and found the Windows licence for the machine, but when I tried to activate it I got this message:
    "Unable to activate Windows. We can't reactivate Windows on this device. Try again later".

    I haven't used the new Windows licence yet, and SLI -dli tells me the old licence that I had was RETAIL (not OEM as I thought). So (how) can I reactivate it on the new motherboard?
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  3. NavyLCDR's Avatar
    Posts : 15,492
    Windows 10 Pro
       #23

    Try:
    slmgr /ato
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  4. itm
    Posts : 53
    Windows 7
    Thread Starter
       #24

    NavyLCDR said:
    Try:
    slmgr /ato
    Hmmm...when I tried that I got: "Error: 0xC004C003 The activation server determined the specified product key is blocked"

    ???
      My Computer


  5. Posts : 638
    Win10 x64 Pro - 2 desktops, 2 laptops
       #25

    Hmm. Is the old drive MBR and the new computer set up to expect GPT? If so, maybe it's just a matter of enabling CSM in BIOS.

    No, probably not. Then you just wouldn't find a bootable drive.
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  6. Megahertz's Avatar
    Posts : 2,377
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #26

    Did the new computer came with same version (Home or Pro) that you had on the old one?
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  7. Superfly's Avatar
    Posts : 3,325
       #27

    itm said:
    OK so I managed to resolve the issue by booting to a Windows 10 Pro disk and using the repair option. Windows started up but, as predicted, is not activated. The licence status says: "We can't activate Windows on this device because you don't have a valid digital licence or key., select Troubleshoot below. Error code: 0xC004C003

    So I ran the troubleshooter, and found the Windows licence for the machine, but when I tried to activate it I got this message:
    "Unable to activate Windows. We can't reactivate Windows on this device. Try again later".

    I haven't used the new Windows licence yet, and SLI -dli tells me the old licence that I had was RETAIL (not OEM as I thought). So (how) can I reactivate it on the new motherboard?
    @itm

    In short:
    The generic key is retail but will be blocked - the OEM licence which underlies the 'retail' (btw MS fixed that inconsistency - but that's another story) .. generic can't be tranferred.
      My Computer


 
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