Hi Ernest. I'm Greg, an installation specialist, 10 year Windows MVP, and Volunteer Guardian Moderator here to help you.
See specific fixes working for that error here:
https://www.thewindowsclub.com/windows-10-activ...
What is the Activation Status and Edition showing at the top of the page at Settings > Update & Security > Activation?
Run the Activation Troubleshooter in the same location and report back its findings
If the laptop came with Windows 10 Home then it should have the Product Key embedded in the UEFI firmware chip on the motherboard. You can confirm this by downloading and running ProducKey from http://www.nirsoft.net/utils/produkey-x64.zip and look for the OEM-BIOS key. You can even try copying and pasting the OEM-BIOS key it reports into Settings > Update & Security > Activation > Change Product Key.
If that fails it may be because it's already converted to a Digital License which uses only the generic Product Key that Windows uses when you install without any Product Key here: https://www.tenforums.com/tutorials/95922-gener.... I would restore that key and wait a day or so to check back because the error can also mean the activation servers are overloaded as Windows 10 approaches a billion users and MS cannot build server farms fast enough to keep up.
Or you can contact Microsoft Support phone or chat options here: https://partner.support.services.microsoft.com/...
I hope this helps. Feel free to ask back any questions and keep me posted. If you will wait to rate my post, I will keep working with you until it's resolved.
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