Before installing KDE Neon you must back up all your important data.
How to install dual boot KDE Neon Linux and Windows 10 - step by step video guide
How to Download and Install KDE neon Desktop on Windows 10 PC
Step-by-step guide on how you can dual-boot or multi-boot the latest Linux KDE Neon with Windows 10. Why? Because KDE Neon is brilliant. And free.
This is based on Windows 10 and KDE Neon. These steps can also be used for other Linux operating systems, e.g. Kubuntu.
KDE Neon is an open source lightweight rolling Linux distribution, providing a high degree of customize ability and speed. It can be easily dual booted on your PC with Windows and other operating systems - this video shows how to do this. You can keep Windows and have the benefit of a Linux OS, which you can select on boot-up.