Windows 10 free upgrade

You will upgrade windows 10 on your windows 7 or windows 8.1 operating system, by just installing the free version available to download by just clicking on windows icon appears on the bottom right corner of your PC screeen. This offers available for a limited period, as per reviews so far about windows 10, we can say it undoubtedly that it's the best operating system so far. It is collectively consists all major functionalities of the past versions of windows as well some advanced features. Which made windows 10 better than any other operating system availabel on windows platform.