Windows Explorer Auto Arrange - Disable

That's great news.

Vix,

Just a thought. Are you trying to view the slide show from within a library folder. If so, it will not work in it. You must view the slide show from with the actual folder (ex: c:\Users\(user-name)\My Pictures) location instead for the slide show to view them in the order that you arranged them in.

What's the full path of the folder so I can do some testing on my system with the same path if possible?

While in that folder, after you have arranged the images how you like, double click on a image to open it in Windows Photo Viewer, then click on the play slide show button. For me, it plays the slide show in the same order that I have them arranged in my C:\Users\Public\Pictures\Sample Pictures folder starting at the image that is currently being viewed in Windows Photo Viewer.

Is it an external or internal drive?

Have you tried doing it the way I described above?

Strange, the slide show is displaying the images in the order I have manually arranged them in the folder.

When you have the Windows Photo Viewer slide show playing, right click on the slide show, and see if you have Loop selected and not Shuffle.