While Windows does have some built-in support for file compression, it's pretty limited, and definitely not enough even for a slightly more advanced user. You don't have to be doing rocket surgery or ...

Earlier this year, we reported on Microsoft expanding its compression support in Windows 11 to include native RAR, 7-Zip, and other file formats that aren't your basic ZIP files.

To open an IMG file and view the contents in Windows 7, you need a third-party file extraction program such as WinRar or 7-Zip.