In windows 7, file extensions are hidden by the default settings of Explorer, as well as folders and system files, here’s how to show file extensions in Windows 7:
- To start, you need to launch Explorer and click Tools > Folder Options >View
- Scroll down and find the option “Hide extensions for known file types”, uncheck this selection, then the file extensions are showed instantly
- I also suggest you choosing to “Show hidden files and folders”, in this way you can see all the folders and files, it’s very important to trouble shoot your problems with windows 7
Suggest reading: Useful windows 7 troubleshooting tips