problems opening a movie

[MaRcOs]

:oops: when i installed bs player, it was perfect, everithing worked all right, but after a while, suddenly i try to open a movie, (even movies that i've already seen without problems), and the software get freezed opening the movie, from then and on the computer get freezed and i can not even shutdown my pc, i could solve this poroblem sometimes reinstalling the bs player and the k-lite codec pack (the one that i like more until now), but now it doesn't seem to be helpful, please HEEEEEELP!!!!!!!, :!: MaRcOs