I just built a new PC with an ASUS P8P67 PRO, a Core i5-2500 and 2 GTX 460s. THe first one (which has been detected) is the MSI Cyclone 1GB version, and the second one (not detected) is also an MSI card, using the reference cooler and 768MB of VRAM. For some reason the computer isn't detecting the second card, and when I open the Nvidia Control Panel there are no SLI options. I have already uninstalled and reinstalled the drivers many times. What should I do??