Never install a custom OS on your primary machine without backing up your data first, as this requires a clean installation (wiping the drive).
You will likely need to use a tool like Rufus to create a bootable USB drive from the .7z archive once it is extracted. How to Use This File Win10_lite_[aspherius_edition].7z
The file refers to a custom, "debloated" version of Windows 10 created by a developer or community member named Aspherius . These versions are typically designed to run on older hardware or for users who want a high-performance system with minimal background processes. What is Windows 10 Lite? Never install a custom OS on your primary
Pre-installed apps like Candy Crush, Maps, and News. Win10_lite_[aspherius_edition].7z