Although Microsoft concluded its free Windows 10 upgrade program over a year ago, the company has yet to close some loopholes that were opened for folks running Windows 7, 8 and 8.1. If you thought about taking advantage of the promotion but never got around to it, there's nothing stopping you from downloading a free copy of Windows 10 from Microsoft's servers.
A quick patch update to Windows can extend the useful life of a PC. To take the fear out of Upgrading Windows 98 to Windows XP, rely on this guide. - PCSTATS Tips