Welcome to Seven Forums donny9182. Try this:
Thumbnail Cache - Clear and Reset
Also, make sure that Always show icons, never thumbnails isn't checked in view settings for folders
Open Windows Explorer (any folder)> Organize> Folder and search options> View tab> make sure Always show icons, never thumbnails isn't checked, if it is, uncheck it
If no help, have a look at the suggested fix on this link:
HERE
A Guy