Graphics problem on Black Plague

[MrRouquette]

(English is not my mothertongue, please excuse every mistake I could make)

Hello,

I bought the Penumbra Chronicles set and installed Penumbra Black Plague.
The game works fine but the graphics is all wrong, the colors are just like a thermo vision (flashy colors, especially purple, blue and others cold colors)

I own a pc, under windows 7. My graphic card is a Mobile Intel 4 Series Chipset Family.

I've installed the patch 1.1

I've watch some forum and tried to execute the game under windows XP3 and as administrator

But nothing works.

Please help me to solve this problem cause I love that game and paid for it