Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

Symptoms. On a computer that is running Windows 7, you use the Chkdsk.exe program to schedule a disk check during the next system startup. However, the disk check does not start correctly. Specifically, you may experience one of the following issues the next time that you start the computer:

Dumpchk is a command-line utility you can use to verify that a memory dump file has been created correctly. Dumpchk does not require access to symbols. You can download debugging tools for Windows products from the following Microsoft Web site: http://www.microsoft.com/whdc/DevTools/Debugging/default.mspx.

Check here for the known game issues that we're currently tracking and find out what you can do about them. You see the following error code when you try to launch a game on a Windows 10/11 device: 0xc0ea0001. This can mean that there’s a potential service outage or an issue with the license manager on your device.

If you are having issues installing or updating Gaming Services on your PC, or if you are noticing that the Xbox app for PC is launching with missing content, you may want to download and run the Gaming Services Repair Tool for PC.

Microsoft Defender Antivirus is a powerful tool that finds and removes malware from your PC. Here's how to use it in Windows 10 or 11 to scan your PC. Important: Before you use Microsoft Defender Offline, make sure to save any open files and close apps and programs. Open your Windows Security settings.

Shrink a basic volume. Change a drive letter. Troubleshoot Disk Management. To open Disk Management, right-click (or long-press) the Start button and select Disk Management. If you need help freeing up space on your PC, see Disk cleanup in Windows or Free up drive space in Windows.

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. In the Open box, type the following command, and then press Enter:

Right-click Registry, and then click Add Key. In the Select Registry Key dialog box, expand Machine, and then move to the following folder: Software\Microsoft\Windows NT\CurrentVersion\Svchost. Click OK. In the dialog box that opens, click to clear the Full Control check box for both Administrators and System.

Windows 11 Windows 10. System File Checker is a utility in Windows that checks for problems with files on your computer. To run it, follow these steps: Make sure you've installed the latest updates for Windows, and then restart your machine. To find out more, read Update Windows.