How to show hidden file extensions

By default Windows 7 hides most of the file extensions. Here we will show you how you can show all file extensions:

1. Open “Start menu”.
2. Click “Computer”.
3. Click “Organize”.
4. Choose “Folder and search options”, from the menu.
5. Choose “View” tab.
6. From the list below, clear “Hide extensions from known file types” checkbox.
7. Click “OK”.