Windows 10: Vista Pro OEM to Win10 Activation

I upgraded my wife's (old) Sony Vaio laptop running an OEM copy of Windows Vista Professional to Windows 10 Pro using the media creation tool. However, the original product key from the MS label is repeatedly not accepted as valid.


So in my case the hardware is the same and I installed Win10 Pro over the original Vista premium license (and deleted the old OS due to space). Thanks in advance for your assistance.

:)

 

Upgrading OEM Win10 Home to MSDN Win10 Pro


Moving to a new PC that I'm building myself. Currently running Dell OEM Win10 Home. New PC will have Win10 Pro, MSDN (multi-activation or retail keys) version.


My backup software can do a "system transfer" that will allow me to transfer everything (OS and applications) to the new computer.


Should I upgrade from OEM Home to MSDN Pro on the old computer and then transfer everything to the new computer?


Or just install Win10 PRO MSDN on the new computer and use the backup software vendor's application transfer program to move the applications and registry entries?


My goals are:

1. Not have any "dinosaur bones" either from the OS on my SSD from the old OEM Home version on the new PRO version

1. Not have to reinstall and reconfigure everything (which would take about a week)

Thanks for any advice I can get...

 

Win7 Pro (OEM) to Win10

Thanks Andre.

Just as I knew...

My original question was why I wasn't able to chose Win10 Pro when using the MCT from within Win7 Pro OEM. I'm guessing my original suggestions were correct?

Henry

 

Can I upgrade OEM Win10 Home to Retail Win10 Pro?

Moving to a new PC that I'm building myself. Currently running Dell OEM Win10 Home. New PC will have Win10 Pro, MSDN (multi-activation or retail keys) version.

My backup software can do a "system transfer" that will allow me to transfer everything (OS and applications) to the new computer.

Should I upgrade from OEM Home to MSDN Pro on the old computer and then transfer everything to the new computer?

Or just install Win10 PRO MSDN on the new computer and use the backup software vendor's application transfer program to move the applications and registry entries.

My goals are:

1. Not have any "dinosaur bones" either from the OS on my SSD from the old OEM Home version on the new PRO version
2. Not have to reinstall and reconfigure everything (which would take about a week)

Thanks for any advice I can get...