If you are unhappy with Windows 10 we just want to show you how the previous dragon will turn. I want to tell you a few details before going on. You have installed Windows 10 10 days after the upgrade to use the following steps. Otherwise the following steps can not be used. So Microsoft thinks you decide to use Windows 10 and you will not come back. So decide immediately whether you like it or not.
This step clears all files on your computer and deletes the drivers that came with the updates you made after the upgrade and upgrade.
If you have not done anything recently download the new Windows at https://www.microsoft.com/en-US/software-download. But for this you will want the key to the software. So you should have bought it on time.