That means it's time to either buy a new computer or upgrade your system to Windows 10.
Microsoft says you should buy a new computer if yours is more than 3 years old, since Windows 10 might run slowly on older hardware and won't offer all the new features. If you have a computer that's still running Windows 7 but is still fairly new, then you should upgrade it.
If you're happy with the speed and battery life of your current computer, though, you might be good to upgrade the computer you already have to Windows 10.
That's it! Now you'll have Windows 10 and will receive frequent software updates and important security patches when Microsoft releases them.