Here are some things you can try to go back to Windows 7 or Windows 8.1. (Note: If your computer came with Windows 10, earlier versions of Windows were never installed on it, so you can't directly go back to Windows 7 or Windows 8.1.)
- Select the Start button > Settings > Update & Security > Recovery, and then select Get started under Go back to the previous version of Windows 10, Go back to Windows 8.1, or Go back to Windows 7. Following these steps will keep your personal files, but remove apps and drivers installed after the upgrade, plus any changes you made to settings. The option to go back to your previous version of Windows is available only for a limited time (10 days in most cases) following the upgrade.
- Try restoring your PC to factory settings. This reinstalls Windows 8.1 or Windows 7 if one of those versions came with your PC, and it removes personal files, apps, and drivers you installed, plus any changes you made to settings. Go to Settings > Update & Security > Recovery > Reset this PC > Get started and locate Restore factory settings.
- If you have a product key for your previous version of Windows, use the media creation tool to create installation media for Windows 8.1 or Windows 7, and then perform a clean install of Windows. If you need help finding your key, see Find your Windows product key.