Bottom line...to reverse video...the individual frames
must be extracted and reassembled in reverse order.
The following links offer some ways to accomplish that task.
(FWIW...it's always a good idea to create a System
Restore point before installing software or updates)
K-5 Video Reversal Tool
http://oakdome.com/k5/video-reversal-tool/K-5-video-reversal-tool.php
(runs on - (Win XP / Vista / 7)
(the file to download is : "K-5VideoReversaltoolsetup.exe")
(If you decide to install K-5 Reversal Tool...you may
want to uncheck the CCCP Codec Pack)
The K-5 Video Reversal tool will convert the
video and audio so you can play them backwards.
The following older articles may offer some ideas also:
Movie Maker 2 Editing - Video Reverse Effect
http://www.papajohn.org/MM2-Editing-Reverse.html
Reverse Video
http://www.rehanfx.org/tips.htm#Reverse_Video
(this is an older article and some of the links are
dead...you'll have to search for the required utilities)