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.

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First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open. The troubleshooter provides steps for you to follow. If a program isn't listed in the uninstall options, you'll be asked for that program's product code.

There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.

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

The installation file is typically named Autorun.exe or Setup.exe, but this may vary. If you're not sure, check the Readme file in the folder for instructions about how to run the installation process.

Get Help has troubleshooters you can run for many common scenarios. These often help resolve issues without the need to contact support. If a troubleshooter is available for your issue, select Start to run that troubleshooter. After you run any troubleshooter, Get Help provides details on any findings and suggestions for possible remedies.

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.

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

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