Whenever I try to play .wmv in an media player, it won't start playing by itself. When I slide the bar a little further only then it does. Could be the .wmv file corrupted from the beginning? How can I check this to make sure if it is?
You can try and use AsfBin to try and fix the wmv file. I use this regularly to fix my wmv files. Just save the entire file again through AsfBin with default settings. It usually fixes most of the wmv files.