Free upgrade from Win 7, Win 8/8.1 to Win 10 was over on July 2016.
In theory, if you new PC is running the older Windows edition, and you want to upgrade it to Win 10, you will have to purchase a genuine Windows 10 license (product key) in order to activate the installation. It is because Free upgrade is over.
HOWEVER, for reason no body knows, we have found out that the free upgrade is, in fact, still available.
So, if your new PC is running win 7, or win 8/8.1, you can download the Win 10 iso file and use it to upgrade to Win 10 for free.
Just one thing you must be aware of. You MUST choose the CORRECT Windows 10 ISO file that is corresponding to your new PC current Windows Edition.
Example : If your new PC is running Win 7 Home Premium, English language, and 64-bit, then you must select Windows 10, English Language and 64-bit.
I would suggest that you do it this way. It's simpler and mistake-free.
Assuming your new PC is running a genuine copy of Windows 7, 8 or 8.1 and that it is activated.
In your new PC, use this Media Creation Tool link :
www.microsoft.com/en-us/software-download/windows10
Click the
Upgrade now button.
That will start the Upgrade Assistant to check if your pc is ready for upgrade. If approved, it will tell you what to do. Just follow the prompts.
You will be allowed to keep your files, settings and most apps.
No product key is required.
Activation is automatic.
If you have questions before or during installation, please post back.
I would like to know the result of your installation.