Prince of persia forgotten sands pc game help?

-In the begining of when

we see in the cut scene

malik fighting with sand

monster,and after the cut

scene prince has to go

downward and then

climb a lever which then

operates a pole,when i

cilmb that pole and make

the prince revolve around

that pole,everything turns

blue and when i

jump ,prince dies,i dnt

think its a graphic

problem bcz my system

meets with all the system

req...plz help system

meets with all the system

req...plz helpthere are too many bugs in this game not only this but sometime the doors doesn't get opened so i have a crack which can fix all problems in this game