Start your PC with a Windows 10 Bootable Media and open the Command Prompt externally. Here is how you can use the command externally to scan your Windows 10 PC for corrupt or missing files and to fix the issues automatically: Your Windows 10 PC should work normally now.Īs mentioned earlier, we can use the System File Checker externally after you have started the computer with a Windows 10 bootable media like a DVD or a USB drive. It will start to check your Windows 10 for missing or corrupt files and fix them automatically. Type the SFC /SCANNOW in the Command Prompt window and then press Enter. Note: You can execute any command as this is the Elevated Command Prompt, so be careful with everything you input in because any command typed incorrectly may result in permanent system failure.

Wait until the Command Prompt interface opens up. You may asked if you want to allow this app to make changes to your PC, click Yes to confirm your action.

3.Ĝhoose Command Prompt (Admin) from the menu to open the Command Prompt Window.2.Ěfter the desktop screen shows, right click the Start button in the lower-left corner to open the Windows 10 start menu.Log on your Windows 10 PC using an administrator account. To run the System File Checker, an Elevated Command Prompt must be opened from within Windows. Here is how you can use the SFC /SCANNOW command to scan your Windows 10 computer for errors and to fix them automatically: Part 1 - Run SFC from within Windows 10 The following guide will describe both of them step by step, and offer you some recommendations on how to repair other Windows 10 system issues.

Normally you don’t need to run the SFC externally unless your Windows 10 computer fails to boot. There are two ways to use SFC/SCANNOW command, one is using it from within Windows 10, the other is using it externally. It scans the integrity of all protected operating system files and replaces incorrect, corrupted, changed, or damaged versions with the correct ones.If there is asystem file missing orcorrupted in your Windows 10, it may not work properly, and you may encounter a system crash. System file checker, also known as SFC, is a system-file-corruption-checker utility built in Windows Operating System.

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