Summary. When you use the Recovery Environment (Windows RE) to troubleshoot startup issues, first try the Startup Repair option in the System Recovery Options dialog box. If this does not resolve the issue, or if you have to manually troubleshoot additional issues, use the Bootrec.exe tool.

Use the Bootcfg utility in the Recovery Console to correct the Boot.ini file: Use the Windows XP CD-ROM to start your computer. When you receive the message to press R to repair Windows by using the Recovery Console, press the R key. Select the Windows installation that you want, and then type the administrator password when prompted.

Windows 10. Symptoms. When trying to boot Windows, you receive the error: An operating system wasn’t found. Try disconnecting any drives that don’t contain an operating system. Press Ctrl+Alt+Del to restart. Resolution. A bootable USB or DVD with Windows 7 or higher is needed to bring up the Command Prompt.

Use the Startup Repair function. Use installation media to reinstall Windows 11. Use installation media to restore your PC. Use a recovery drive to restore or recover your PC. Go back to your previous version of Windows. Restore from a system restore point. Learn about the recovery options in Windows.

Windows 7. Support for Windows 7 ended on January 14, 2020. We recommend you move to a Windows 11 PC to continue to receive security updates from Microsoft. Learn more. The System Recovery Options menu contains several tools, such as Startup Repair, that can help you recover Windows from a serious error.

Windows 10. Optimizing your drives can help your PC run smoother and boot up faster. To optimize them: Select the search bar on the taskbar and enter defrag. Select Defragment and Optimize Drives. Select the disk drive you want to optimize. Select the Optimize button. Defragment your Windows 10 PC.

Windows 10. Runtime Broker is a Windows process in Task Manager that helps manage permissions on your PC for apps from Microsoft Store. It should only use a few megabytes of memory, but in some cases, a faulty app might cause Runtime Broker to use up to a gigabyte of RAM or more.

This article describes the Windows Update Standalone Installer (Wusa.exe) in the following Windows operating systems: The Wusa.exe file is in the %windir%\System32 folder. The Windows Update Standalone Installer uses the Windows Update Agent API to install update packages.

If installation doesn't start automatically, browse the disc to find the program setup file, usually called Setup.exe or Install.exe. Open the file to start installation. Insert the disc into your PC, and then follow the instructions on your screen.

Windows includes a tool called Microsoft System Information (Msinfo32.exe). This tool gathers information about your computer and displays a comprehensive view of your hardware, system components, and software environment, which you can use to diagnose computer issues.