@agentbb007
if you are Using a retail win7, then no issue. if you are using an OEM win7, then you also do not have transfer rights to a new computer and a non same model motherboard upgrade probably violates that and will probably require your windows to be reactivated (although you could always call up microsoft after it fails activation and get it activated hopefully) then do the upgrade.
(considering that OEM is half the price of retail at least where I am, I never buy retail versions, although considering win10 is the last os , maybe i should consider it over a 20 year lifespan)
http://answers.microsoft.com/en-us/windows/forum/windows_10-win_upgrade/windows-10-have-a-product-key/0be532bc-99b5-4089-8c7d-5fb03192ae7f?auth=1
If you upgrade from a retail version, it carries the rights of a retail version.
If you upgrade from a OEM version, it carries the rights of a OEM version.
Full version (Retail):
- Includes transfer rights to another computer.
- Doesn't require a previous qualifying version of Windows.
- Expensive
Upgrade version (Retail):
- Includes transfer rights to another computer.
- require a previous qualifying version of Windows.
- Expensive, but cheaper than full version
OEM :
OEM versions of Windows are identical to Full License Retail versions except for the following:
- OEM versions do not offer any free Microsoft direct support from Microsoft support personnel
- OEM licenses are tied to the very first computer you install and activate it on
- OEM versions allow all hardware upgrades except for an upgrade to a different model motherboard
- OEM versions cannot be used to directly upgrade from an older Windows operating system
What happens if I change my motherboard?
As it pertains to the OEM licenses this will invalidate the Windows 10 upgrade license because it will no longer have a previous base qualifying license which is required for the free upgrade. You will then have to purchase a full retail Windows 10 license. If the base qualifying license (Windows 7 or Windows 8.1) was a full retail version, then yes, you can transfer it.