Hi,
Most corrupted files can't be repaired and you should delete or replace them. However, you can occasionally use a program to repair a corrupted file (or at least salvage some of the data within the file). Some programs of this type are available on the web. Search using your favorite search engine for more information.
Note: Using Third Party Software, including hardware drivers can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the use of Third Party Software can be solved. Using Third Party Software is at your own risk.
If the corrupted file is an important system or program file, you might need to reinstall the program that the corrupted file is associated with.
Refer this article for more information:
**http://windows.microsoft.com/en-US/windows7/Corrupted-files-frequently-asked-questions**
Regards,
Afzal TaherMicrosoft Support Engineer