Subtitles won't fully show on scrren
 

For some reason I can't get subtitles to fully show on the screen.I can sometimes see the top part of the subtitle but not the rest.I am having the same problem with windows media player and mdeia player classic.

Can someone tell me what's wrong?

First uninstall the software you use for displaying subtitles, probably Vobsub ( a green arrow in systray).
BSPlayer has it's own engine to display subtitles.

I deleted Vobsub and deleted and reinstalled the lastest BSP but I still have the same problem.The subtitles abruptly cut off from the screen as if the screen isn't properly sized..Also in some files I can see subtitles just fine but others I can't.

In options->preferences->subtitles try to uncheck auto splitt line and auto-resize, see what is hapening.