To repair corrupted files in the System32 directory in Windows 7, run the System File Checker utility via the Command Prompt, and perform a full scan. Once the scanning process completes, the utility should automatically repair the System32 directory by replacing the corrupted files with ones from the backup directory.
The System File Checker utility requires an elevated access to Command Prompt. To do this, click on the Start button, type “command prompt” in the search field, right-click on the Command Prompt icon, select the Run as Administrator option, and click Yes if the User Account Control dialog box appears. To run the scanning process, type “sfc /scannow” in the Command Prompt, and press Enter. Once the verification reaches 100 percent, a message should appear informing you that the corrupted files were successfully repaired.
If you get a message that the WRP service could not perform the requested operation, run the scanning process from the Safe Mode. To access Safe Mode, press R while holding the Windows key, type “msconfig” in the field, and press Enter. Click on the Boot tab, check the box next to the Safe Boot option, press OK, and restart the computer. There is no need to download the System File Checker utility separately because Windows 7 includes it by default as part of the Windows Resource Protection service.