Problems with the lighting (Deus Ex)

Good day, dear friends, will tell you about my problem:

Put Deus Ex (Edition game of the year) on a laptop with a large screen and powerful hardware, the game has passed, all right, SR. Then, with the same image, put the game on a netbook with a small screen and weak hardware. The game is stable, no brakes, BUT the game is very dark, and if the office of UNATCO or in Shanghai it discreetly, in Paris it is impossible to play: nichrome is not visible, my eyes hurt, all the batteries go into a flashlight, and enemies find me quickly in his light. I tried to raise the brightness in the settings, put it on high, but the picture becomes brighter for exactly 3 seconds after returning to the game I go to menu, click continue game", the game starts, 3 seconds is all you see, then the darkness of Egypt. Press ESC Again to continue, again 3 seconds of light, then darkness.

Already tried and the files to edit and in safe mode to run, no sense. The game is patched.