@John lavery
Hi,
When Windows 10 was first released, the offer for a free upgrade was available, but it ended on July 29, 2016.
For your reference:
https://www.microsoft.com/en-us/windows/windows-7-end-of-life-support-information
You can purchase and download Windows 10 on your device.
Although, if your computer is more than three years old, it might be time to consider upgrading to a new device.
Hope above information can help you.
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