New
#31
i's say that you've got corrupt media files and explorer is tripping up with creating thumbnails/ reading those files. if you ruled out video file corruption and you have enough space on a spare drive you can try moving all personally created/ downloaded image and preferably video files to it.
On the other hand for images it's tricky and time consuming if you have a lot of images where you want to keep EXIF data.
If you don't want to keep EXIF data you might use JPG Cleaner to delete corrupt files. Or you can scroll through each image and check for thumbnail preview creation and that takes a lot of time for multiple images.
Or you can just opt to clean (with delete corrupt images selected) and check the log for problem images if there are any errors shown.
If your images are important then don't run it without a backup of all images saved to another drive or else unless you havew a full system image backup/ restore solution in place.
Rainbow Software - Programs