I have Nvidia GeForce GTX 570 in my PC using which I run games in multiple monitors using SLI. I have played Skyrim, Syndicate in SLI mode. I recently purchased Risen 2: Dark Waters and tried to play it in SLI mode but it didn’t work. It runs fine in Single screen but the manual says that it is possible to play it in SLI mode. I cannot understand why it is happening. MY friend has Asus GeForce GT 520 and he can play this game on multiple monitors using SLI. I cannot understand where the problem lies, is it my graphic card, other peripherals in my computer or is there any problem with the game. Can anybody tell me what the problem can be?