Harry Potter 3 problem

I have the Third game of harry potter. Whenever I start game the screen goes blank and goes out of frequency.
Waht can I do?
Please give me a breife solution....

[shaunak]

hey if ur gfx card is intel 845 integrated card or better the game should work. get the latest drivers.
btw logically harry potter 3 on pc is quidditch world cup and it works on all types of gfx cards so assuming that u want to play prisoner of azakaban try updating your drivers.

What do you think I am a bigginer. Please read my signature.Its clearly stated that I am not the bigginer.I have all the latest drivers. I also know that this is a screen resolution problem of my moniter. I just want to know hoe to decrease screen resolution of this game.