Why doesn't win10 display thumbnails only to see icons?

Why does win10 not display thumbnails and only see icons? After upgrading win10, I found that the image can only see the icon, can't see the thumbnail, and then find a piece of it when looking for a specific picture, which is very inconvenient.

1. It is like this when you upgraded. It has been relatively convenient to name, but it is very inconvenient if the same picture is more.

2. Under normal circumstances, in “View”--->“Options --->“Change Folder and Search Options>---> ;“View”--->“Advanced Settings>--->Show “Always show icons, never show thumbnails”

3, but after this setting, I found the icon, no thumbnail. As shown below, where is the problem?

4, the key is still in the "View" option, only select "large icon", "large icon", "in the icon" & rdquo; (any of the three ) to display the thumbnail, as shown below.

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