Windows 10: Can I use Windows 7 Product Key for Windows 10?

I have a product key for Windows 7 Home Premium on the back of my computer. I upgraded from Windows 7 to 10. I ran into some problems which caused me to reinstall Windows from a USB drive without being able to boot up Windows. Now, long story short my Windows is not activated anymore, and wanted to know if I can use it on Windows 10 Pro?


I looked up if I can use Windows 7 keys for Windows 10 and it said I can.


I tried entering the Product key I have on Windows 10 Pro and it did not work.


Do I need Windows 10 Home for it to work?


If so, can I change Windows editions without losing data?

:)

 

Installing Windows 10 using Windows 7 key

Nope, you need to install Windows 10 first and make sure the Windows 7 key is transferred to your Windows account after you've installed Windows 10 (not quite sure how that works). I missed the last step and I could not activate Windows 10 after a re-install... Microsoft seem to have done everything they can to make it a PITA. Also, it's technically too late to do this now anyhow, as the upgrade offer has expired. But KMSPico works quite well...

As for getting rid of Windows, delete the Windows folder.

 

Installing Windows 10 using Windows 7 key

Two quick ways to use your Windows 7 key during the install:

1. When asked for the serial #, put in that Windows 7 serial # and continue on. It should activate as soon as it hits an internet connection.

2. When asked for the serial #, at bottom of window click on the I don't have a serial # text (or whatever it says). It will then ask what version you want to install, ie. Home or Pro. Be sure to install the right version that matches your Windows 7 key. Then once you get into windows you can activate by putting in the key. Some people prefer this method, not sure why honestly. Easier to do #1, since the installer will see your key and know which flavor of Windows 10 you are trying to install.

 

Installing Windows 10 using Windows 7 key

Thank you, but I still want to know if I can do a clean installation of Windows with my new SSD whilst my old Windows is still installed on the other pc?