By default all Windows operating system hide extensions for known files types. It means that all files will be named without its extension, only its names. For instance file "new.txt" is shown as "new" and in case if we need to see file extension we should enable this option. Following instructions show how to enable or disable displaing of file extension.

1. Go to "Start", "Control Panel", "Folder Option" and click on "View" tab.

2. Scroll down until you see "Hide extensions for known file types" check box.

3. Clear it if you want to show file extensions and check it if you want to hide.

Sometimes you need to hide your desktop icons to see completly wallpaper image but you may need several icons on your desktop. Using the following instructions you van hide or show desktop icons.

To show/hide desktop icons:

1. Right-click on the desktop and open the "Arrange Icons By" sub-menu or you can right-click on any open space on the desktop.

2. In the sub-menu, click "Show Desktop Icons" to check or uncheck it as shown in figure above.

The icons on the desktop will disappear or appear (depend on your previous actions). It may take a few seconds for the desktop to clear up, just give it a second to make the adjustment.