January 14, 2020 is the date that Microsoft will stop supporting Windows 7. Anyone who is still using Windows 7 will receive full screen nag windows to upgrade to Windows 10.
Most users can upgrade to Windows 10 without much concern. The biggest hurdle for most will be learning where Microsoft has moved things. For the most part Windows 10 runs just like Windows 7 (and in many cases it seems to run a little better than Windows 7 and 8). If there are legacy programs that you must run on Windows 7 you can uninstall or “hide” the update that causes the nag screen (KB4493132).
Microsoft has stopped advertising that you can upgrade to Windows 10 for free, but as long as you have a valid key for Windows 7, 8 or 8.1, you will be able to activate a similar version of Windows 10. We recommend doing a fresh install of Windows when doing the upgrade, and this would be a good time to upgrade your hard drive to an SSD if you haven’t already.