The Mystery Of Disappearing Thumbnails!

Many of you must have faced this problem. Thumbnails disappearing with no reason. Worry not! I am here to help you!
To bring the thumbnails back, you have to follow these steps -
1) Go to run (Windows + R)
2) Type "gpedit.msc" and press enter
3) A window will open.
4) In the left pane, click on on "Administrative Templates". Then open "Start Menu and Taskbar"
5) After the category opens, search for "Turn Off Taskbar Thumbnails" and open it.
6) Another windows will open, by default, "Not Configured" will be selected. Now select "Disabled" and click on OK.
That's it! Now your thumbnails will be visible.
Sorry guys I am unable to upload photos for those who hate to read. I will try.

IF any queries or suggestions, feel free to ask.
Stay tuned for more!