Install Windows 7 Service Pack 1 (SP1)
support.microsoft.com › en-us › windowsInstalling Windows 7 SP1 using Windows Update (recommended) If your PC is set to automatically install updates, you’ll be prompted by Windows Update to install SP1. Follow the instructions to install the update. To manually install SP1 from Windows Update: Select the Start button > All programs > Windows Update.
Create installation media for Windows
support.microsoft.com › en-us › windowsOn that website, you can select a version of Windows and create your own installation media using either a USB flash drive or a DVD. To go directly to one of the versions, select one of these links: Windows 7. Windows 8.1. Windows 10 (Then select Download tool now.) Windows 11 (Then select Download tool now.)