Win7 picture only shows the icon does not display the preview picture

Description of the problem:
win7 picture only shows the icon, no thumbnails; whether it is to adjust the small picture, middle picture or large picture or other are not displayed; and in this case Images deleted using the screenshot tool do not automatically have an extension; the situation is as follows:

Solution:
Open Computer & mdash; "Organization & mdash;" folder and search options — "View ( tab label) & mdash; "remove & rdquo; the always show icon is not displayed thumbnail & rdquo; checkmark; diagrammed below: