This document provides step-by-step instructions for installing Windows 7 on a personal computer. It outlines 20 steps for installing Windows 7, including entering the BIOS, booting from the installation DVD, selecting language and regional options, installing or upgrading Windows, partitioning and selecting the installation drive, and completing post-installation configuration like setting the user name and password. The instructions indicate the installation process will take some time and require restarting the computer multiple times.