The second step of our Windows 10 in-place upgrade is to perform the intermediate upgrade from Windows Vista to Windows 7. This process is very similar to the first step, and possibly a little quicker.
You do not need a product key to perform this upgrade, and you do not need to activate Windows 7 once the upgrade is complete.
Use the following instructions to perform the in-place upgrade from Windows Vista to Windows 7.
After the second step of our example Windows XP to Windows 10 in-place upgrade is complete, we now have Windows 7 with Service Pack 1 plus Office Pro 2003 with Service Pack 3.