There is no direct upgrade from Windows Vista to Windows 10. It would be like performing fresh install and you will need to boot with Windows 10 installation file and follow steps to install Windows 10.

Can you upgrade from Vista to Windows 10 for free?

You cannot do an in-place upgrade from Vista to Windows 10, and therefore Microsoft did not offer Vista users a free upgrade. However, you can certainly buy an upgrade to Windows 10 and do a clean installation. … You can install Windows 10 first and then go to the online Windows Store to pay for it.)

Can I install Windows 10 on a Vista computer?

Microsoft doesn’t support an upgrade from Vista to Windows 10. Trying it would involve doing a “clean installation” that deletes your current software and applications. I can’t recommend that unless there’s a good chance of Windows 10 working. However, you could upgrade to Windows 7.