If there are a lot of thumbnails in a Windows Explorer window, then it can slow down your computer while you wait for the thumbnails to load. Choose Medium icons and see if the thumbnails start working again. Windows has the ability to show icons instead of thumbnails, and if this option is turned on, your thumbnails wont appear at all.
Logo Design for Tayla Williams by Katie Lamacraft of Lemon Design New Zealand. I've tried three different methods suggested on this site. This happened to me recently and Iave learned to quickly return the thumbnails to Windows Explorer. Make sure that Always show icons, never thumbnails does not have a check mark next to it. Test drive Windows OS in VirtualBox Detailed screenshots guide. How do I stop seeing thumbnails only. I have tried all the obvious things and nothing is working, making my job very hard when I have to sort through hundreds of pictures to sort and edit.