The document provides step-by-step instructions for installing Windows 10 operating system from an installation disc or USB drive. It describes how to create the installation media by downloading the Media Creation Tool from Microsoft and using it to select a USB or DVD as the installation source. It then explains how to boot the computer from the installation media by entering the BIOS and changing the boot order to prioritize the removable drive or optical drive. Finally, it outlines the Windows 10 setup wizard, including entering a product key, following on-screen instructions, and completing the installation process.