I have searched the web and cannot find a solution. I am reasonably proficient getting around windows but no expert.
My wife has a Dell Inspiron laptop that has developed a strange problem. When you open windows explorer and display folders in the left pane you would expect to see the contents (files) of that folder displayed in the right pane (preview pane). But instead it just says "no preview available". Doesn't matter what kind of files they are it won't show the contents of the folder the way it used to. You have to double click on the folder which then shows its contents in the LEFT pane, but then if you select a picture there in the left pane it will then show the picture in the preview pane.
This is inconvenient because she was used to being able to simply click on a folder in the left pane and see the list of files in the right pane (or thumbnails depending on what she wants).
I have read similar problems on the net but mostly related to a particular kind of file type. She can't preview ANY file type in windows explorer without drilling down to the file itself.
I did a system restore from about a week ago (just before the last windows update) and it didn't help, so I undid the restore.
Any ideas would be appreciated.