Repairing corrupted Windows system files requires the use of specialized tools and techniques. In some cases, the corruption may be minimal and repairable with standard built-in tools. In other cases, the corruption may be more severe and require additional steps. The following steps provide a detailed guide to repairing corrupted Windows system files.
1. Install the latest Windows updates.
Windows periodic updates typically contain fixes to common issues, including system file corruption. Before attempting any other steps, install the latest Windows updates to ensure your system is up to date. This may fix the issue without any additional work.
2. Use System File Checker (SFC).
The System File Checker (SFC) is a built-in tool that checks for any corrupted system files and replaces them with valid ones if necessary. To run SFC, open Command Prompt as administrator and type sfc /scannow. The scan can take several minutes to complete.
3. Use the Deployment Image Servicing and Management (DISM).
The Deployment Image Servicing and Management (DISM) is a tool used to repair corrupted Windows image files. To run DISM, open Command Prompt as administrator and type DISM.exe /Online /Cleanup-Image /Restorehealth. The scan can take several minutes to complete.
4. Use the Windows Update Troubleshooter.
The Windows Update Troubleshooter is an automated tool that can detect and fix common issues related to Windows Updates, including system file corruption. To run the troubleshooter, search for “troubleshoot” in the Start Menu, select “Troubleshoot settings”, and then select “Windows Update” under “Get up and running”. Follow the onscreen instructions to complete the scan.
5. Perform a Repair Install.
If all else fails, you may need to perform a repair install of Windows. This will reinstall Windows without deleting any of your files or settings, but it may fix any system file corruption. To perform a repair install, insert your Windows installation media and follow the onscreen instructions.
Depending on the severity of the system file corruption, several other options may be available. If the corruption remains after performing the steps outlined above, contact Microsoft Support for additional assistance. They will be able to provide additional resources and advice.