Hello, I just signed up on the forum today, no welcome category, so I'll say hello in the section I need help in. I've been fooling around with computers for quite sometime but I'm new to some of this advanced stuff but I'm slowly getting better. From my Modifications in the description I have two Nvidia GTX 550ti's 1 is a 2GB and other is a 1GB. I installed both drivers from both cards and it seems as though I can't enable the Sli mode. I do have the Sli bridge plugged in and I'm running this on 1 monitor with mini HDMI plugged in the primary card. I was wondering if someone could assist me with what I am doing wrong. I tried looking other places for feedback on Google but haven't found a thing. The help would be great thank you.