However you get to the Command Prompt - normally, Safe Mode, or recovery environment - you’ll use the command the same way. RELATED: How to Use Safe Mode to Fix Your Windows PC (and When You Should) If Windows won’t start normally, you can try starting it in Safe Mode or in the recovery environment by booting from your installation media or recovery disc.

If Windows will start normally, you can run it from an administrative command prompt.

You can use the SFC command as long as the computer itself will start. Even if the SFC command doesn’t repair any files, running it will at least confirm that no system files are corrupted and then you can continue to troubleshoot your system with other methods. SFC works by scanning for and replacing system files that are corrupt, missing, or changed. Run the SFC command when troubleshooting a buggy Windows system. RELATED: How to Scan for (and Fix) Corrupt System Files in Windows Run the SFC Command to Repair System Files On Windows 7 and earlier, Microsoft offers a downloadable “System Update Readiness Tool” instead. If a file has been modified, it will automatically replace that file with the correct version. If the SFC command doesn’t work, you can also try the Deployment Image Servicing and Management (DISM) command on Windows 8, 10, or 11 to repair the underlying Windows system image. The System File Checker (SFC) tool built into Windows will scan your Windows system files for corruption or any other changes. RELATED: Everything You Need to Know About the Blue Screen of Death If Windows is experiencing blue-screen or other crashes, applications are failing, or some Windows features just aren’t working properly, there are two system tools that might be able to help. If a file has been modified, it will automatically replace that file with the correct version. The System File Checker tool built into Windows can scan your Windows system files for corruption or any other changes. If SFC fails to run properly or cannot repair the files, run 'DISM /Online /Cleanup-Image /RestoreHealth' to fix any remaining issues. Open Command Prompt or PowerShell as administrator, then run 'sfc /scannow' to fix corrupted Windows System Files.

Repair jpg files windows 10