But before you try third-party tools to repair system files in Windows 7, you must try a effective command line tool to repair corrupted system files.
In this guide, we will show you how to repair Windows 7 system files without using any third-party tools.
1. Type command prompt in Start menu search box and then hit Ctrl + Shift + Enter to launch the Command Prompt with administrator rights. Alternatively, go to Start, All Programs, Accessories, right-click on Command Prompt and then select Run as administrator option.
2. Click Yes if you are prompted with UAC (User Account Control) box.
3. Once the Command Prompt opened, type sfc /scannow and hit enter. This command scans integrity of protected system files and then repairs if problems found.
4. The process may take a few minutes. Once done you are good to close the Command Prompt.
You can also type just sfc in the Command Prompt to know more about sfc commands.
