Frozen Screen when...

[Mogz]

PC FF7::
When Cloud was hyptnotized, he was about to kill Aeris, but snapped out of it, then the game freezes after my cd-rom started to read... then nothing respond or it doesn't do nothing from there.... when i open my cd-rom drive, it tells me to insert "disc 1" which was already in there. Closed my cd-rom with "disc 1" reads it, still freezes there... anyone know whats the problem? been doing this everytime... installed my xp patch also... and the nvidia driver... not sure what is wrong... please help, thanks~