I have recently bought a new system not all of it matters for the problem I am having, I am running Windows 7 Ultimate 64-bit on a tpower i55 with 2 5870's. I am having a problem with crossfire. I am more than positive I do not have to do anything in the BIOS, as they come up in device manager. I am having the problem, I think, with CCC. I do not have the crossfire tab to enable them. I have updated the drivers to 10.2 and still comes up with nothing, I even downloaded the crossfire profiles for the cards and nothing. I installed both of the cards at the exact same time and have both bridges on them. Yes, this is my first time messing around with crossfire. I need help!! I do not know if I have to put one in and then put the second in? Anything would help, Thanks!!