Describes how to troubleshoot the error message "Bootmgr is missing Press Ctrl+Alt+Del to restart" that may occur when you try to start Windows.

If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track. Run the System File Checker tool (SFC.exe)

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys. First, you'll need to download the troubleshooter. Download troubleshooter.

Fixes a "c0000225" error that occurs when you try to start a Windows PE RAM disk image in Windows 7 or in Windows Server 2008 R2 if the UEFI mode is enabled.

You can use installation media (a USB flash drive or DVD) to install a new copy of Windows, perform a clean installation, or reinstall Windows. To create installation media, go to the software download website, where you'll find step-by-step instructions.

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys. First, you'll need to download the troubleshooter. Download troubleshooter.

Describes how to troubleshoot problems that occur when you install, uninstall, or upgrade a program on a Windows-based computer by using Windows Installer.

Configure startup applications from File Explorer. Fix the error: We couldn’t find this app. If you see the massage We couldn’t find this app as an app title in Settings, the app could be on a removable drive, a network drive, or the path to the app might not exist.

The Windows Preinstallation Environment (Windows PE) boot images that are included with the Windows Assessment and Deployment Kit (ADK) for Windows 10, version 1511, are missing information that's required in order to configure network adapters during operating system installation.

Windows 10. Use System restore to make restore points when you install a new app, driver, or Windows update, and when you create a restore point manually. Restoring won’t affect your personal files, but it will remove apps, drivers, and updates installed after the restore point was made.