How do i get my picture icons to show the actual picture thumbnail?

[Technetic]

It seems ive tried different options and i still cant get to see a preview of the picture i have highlighted, i have to open it fully in order to see what it is .anyway to change this?

windows 7 btw

 

[Bongo]

Have a look at this tutorial http://www.sevenforums.com/tutorials/11738-thumbnail-previews-enable-disable.html
Try this tutorial if preview is turn on http://www.sevenforums.com/tutorials/10797-thumbnail-cache-clear-reset.html
Jerry

 

[Arc]

AT the same time, in Small Icons, List and Details view, no thumbnail is generated.