I've windows 10 installed on my laptop, I'd installed a free edition with a product key available. Due to migration of many software from windows 7 to windows 10, my machine is not working as expected, many software are not running properly and performance is not up to.
I want to install a fresh copy of windows 10, wiping out everything.
I tried the inbuilt option to install (Recovery -> Reset this PC), however this didn't help, it stopped giving some strange errors.
What is the best approach to do this, retaining the license/product key?
