get this player:
http://www.radwan.pl/vplayer/ftp/vplayer_06e.zip
and run those movies with this player.
When you do that, do you still experience the problem?
If you don't then go to BSplayer preferences to "video" then "video rendering" section, and try selecting different modes (after selecting mode, close and open movie).
If you do then uninstall every codec you ever installed, and install only:
DivX
XviD
AC3 filter
Matroska Splitter
OGG filter
VSFilter
You can find details and links here:
http://forum.bsplayer.org/viewtopic....ghlight=#16990