For Windows 7, DISM (Deployment Imaging Service and Management) can repair system files using an install.wim from your installation media.
: Open a command prompt as administrator and type sfc /scannow to let Windows repair or replace corrupted system files automatically.
Explorer.exe is the , also known as the Windows Explorer. It is the graphical user interface (GUI) that allows you to interact with the operating system. It is responsible for:
Windows 7 has a built-in tool designed specifically to replace corrupted system files with the correct versions.