Unable to activate windows 10 and Forgot to see the windows 7 product key

-setupwindows 10

I installed a windows 10 copy I can't activate the windows 10. I was using windows 7.I forgot te see my product key.so if i install windows 7 again can i find my previous product key?

What should I do?

Best Answer

You cannot upgrade freely from Windows 7 to Windows 10. There was a period of one year when this was possible, but this offer has ended years ago.

There is no point in re-installing Windows 7, because (1) it will not help in upgrading to Windows 10, and (2) this will not restore the old Windows 7 serial.

You will need to buy a Windows 10 serial key in order to activate it. There is no other way.