Open any windows; for example open Control panel and press Alt key, you will see this the File - Edit- View- Tools menu:
Click on Tools and select Folder options...
After that you will see a new window opened:
Click on Tools and select Folder options...
After that you will see a new window opened:
Click on the View tab and check for the Hidden files and folders. Scroll down if you didn;t find it at the first view! Take care to check the "Show hidded files, folders, or drivers"
That's all! You will be able to see anything hidden.