If you want the computer geek answer here's what Microsoft had to say about the message. Microsoft says if you have a device that's running Windows 10 versions 1507, 1511, or 1607, you will get the screen that says Windows 10 has reached its end of service. Here's the official statement.

The notification shows the end-of-service date for your version of Windows 10.  For more details about the end-of-service date for your version of Windows 10, please see the Windows lifecycle fact sheet.

Versions of Windows 10 that are listed as "end of service" have reached the end of their support period and will no longer receive security updates. To keep Windows as secure as possible, Microsoft recommends that you upgrade to the latest version of Windows 10.

Ok, so what does that mean? Windows 10 constantly updates. You know you've seen it before when you either have turned off or turned on your computer and a blue screen comes on and says "UPDATING WINDOWS THIS MAY TAKE A FEW MINUTES" Then you have to wait ten minutes until it's done. I can't explain all the updates, you can see them all right here.

Sometimes you are better off, sometimes you are angry because all the settings you have are now changed and you have to learn how to use it again.

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So, back to this update. You can update and upgrade. If you want to do that, go to the Microsoft website and decide how you want to fix the problem. If you upgrade or update from a pop-up, you might be using malware or it might be ransomware. Which is harmful to your computer.

The Microsoft Website says if you stick with your old Windows 10 you will not get security updates and your computer may not run the programs you have very well, or you won't be able to use any new ones.