I remember there is an option in XP and 7 that I remember seeing about the balance between visual effects and performance. I don't remember where as of now, but if I do I'll post.
There is an option that says "Let windows choose what's best for my computer" or you can pick your own custom options to select what visual effects you want. Maybe somewhere in that thumbnails for icons have been disabled.
Ok..got an update! Upon further looking into this I fins that only videos/clips that are wmv. are showing a pic on the files. Anything else ( rm. flv. mp4. etc etc etc) do not! Also when I download a clip it automatically downloads as an flv! HELP!
Thanks for the tip...problem with that is that I have an external hardrive that had videos pictures documents etc etc and the videos on that USED TO show the pics on there files as well. On the external hardrive the only videos that show pics on there files is wmv. It used to show all. Most of those videos were made long before I changed to windows 8 or got the new computer so it CAN'T be a realplayer issue , it HAS to be some sort of computer program setting issue.