Hello friends in my computer I have recently downloaded Legend of Grimrock game and installed it. This game is very nice but when I try to put torch in room at that I get black screen. First I though drivers are causing this problem and that is why I have uninstalled graphic card drivers from my computer and then I have deleted all the temporary files from my computer, now after that I have installed graphic card drivers again in my computer and then when I start playing Legend of Grimrock game at that time I get same issue. I am using NVIDIA GeForce 9800 GT graphic card and I have 4 GB RAM in my computer. if anyone knows how to fix this problem then let me know.

Hmm.. something related to your computer only. Try to update drivers , download latest for 9 series from Nvidia website and try again playing this game.