Penumbra Overture - Black Screen

[bugmenot]

Then the graphics chip might not be able to run the game.

The netbook is new from yesterday and i first install penumbra without updating drivers, and it appeared an error "Penumbra Overture Could not set displaymode in 640x420" and penumbra minimize. But when i maximized, the game run ok. Since I installed new drivers, the error hasn't appeared but i can only see black screen :/