When critical Windows system files are missing or corrupted, your operating system may begin to malfunction. Common symptoms include Windows features not working properly, system errors, or Windows becoming unresponsive or freezing.

Learn how to run System File Checker in Windows to check if your computer has problems with files.

Windows provides a variety of configuration tools tailored to meet the needs of different users. These built-in tools facilitate your device's customization and monitoring, allowing you to change Windows' configuration to suit your preferences and requirements with precision.

Troubleshoots and fixes common issues with security and malware prevention in Windows.

Fixes an issue in which an MS-DOS-based program crashes on a computer that is running Windows 7 because of a change in the Dosx.exe file. This issue occurs when the program uses the MS-DOS protected mode interface.

Learn how to use the DxDiag.exe tool to collect system information useful for troubleshooting problems with Microsoft Casual Games.

Provides links to the uninstall tools and directions for many security programs.

Learn how to use Manage and Optimize Drives to keep your disk and data drives defragmented and at top performance in Windows.

This article describes how to start the Disk Cleanup tool and specify the hard disk to be cleaned by using the command line. To start the Disk Cleanup tool and specify the hard disk to be cleaned by using the command line, follow these steps: Click Start, and then click Run.

To run a Control Panel tool in Windows, type the appropriate command in the Open box or at a command prompt. NOTE: If you want to run a command from a command prompt, you must do so from the Windows folder.