Just spent on win8, view the picture will use win8 "photo" application, the full screen without title bar, not closed, used not very used, or have to find ways to change before using windows picture viewer.
In win8, just open the picture default is to use win8 "photo" application to view the picture:
If you are not touch screen, it should be less convenient, to change here, you can right-click any picture, select the pop-up menu in the "open mode" command, and then select the submenu of "select the default program ..." command:
In the open selection interface first check "All .png files are used to open this application," and then point "Windows Photo Viewer":
After doing this, all PNG images are automatically opened with Windows Photo Viewer.
Then right-click the other format pictures, according to the above method into a "Windows Photo Viewer" it.