How to reinstall Windows on a laptop, provided that I upgraded to Win10?

Question

Windows

Greetings.
I have the following problem - I have a Lenovo z710 laptop. It was purchased with Windows 8 preinstalled. Then I upgraded it first to 8.1, then to 10 (it was still possible to upgrade from license 8 to license 10 for free)
I need to reinstall the system (something started to slow down).
What is the correct way to reinstall Windows, provided that I had a licensed 8 updated then to a licensed 10?
Thanks in advance

Answer 1

If your key is tied to an account (that is, you have a Microsoft account on your laptop now), then simply reinstall it in the usual way. The license is linked to the account and will be activated automatically as soon as you add it after reinstallation

Answer 2

Before reinstalling, I advise you to try simply resetting the system ("Return the computer to its original state"):
windowstips.ru/notes/16657 for
more details here www.outsidethebox.ms/18000
If you reinstall, download the appropriate win10 distribution from the MS offsite and install. When it asks for a code during installation, answer No key or whatever it is in Russian. If you have correctly updated to ten, then Vin will be quietly activated, you will only need an Internet connection, tk. activation goes by means of MS-ovskih servers.
www.howtogeek.com/224342/how-to-clean-install-wind...
www.howtogeek.com/226510/how-to-use-your-free-wind...

The free Windows 10 license Microsoft is providing to upgraders works differently. Microsoft won't issue you a Windows 10 product key. Instead, when you perform an upgrade from within Windows 7 Service Pack 1 or Windows 8.1, the upgrade process registers a unique ID associated with your PC's hardware on Microsoft's Windows activation servers.
In the future, whenever you install Windows 10 on that same PC, it will automatically report to Microsoft's activation servers. Microsoft will confirm that the PC with that specific hardware configuration is allowed to use Windows 10, and it'll automatically be activated.
This isn't actually made clear in the installation process itself. To clean-install Windows 10 on a machine activated in this way, you have to continually skip all the product key prompts while installing it.