There is absolutely nothing. Screen is asleep, as if no input is coming through. Sometimes it boots fine (I'm using it now). Other times, it won't boot (with image) at all. If I keep attempting to boot it eventually kicks up. If I let it sit for a while, it goes to Windows (I believe), as when I press the power button it takes a while for it to shut down.
I am using an HDMI to Mini-HDMI cable, which has proven to work in the past - does this card or any cards rely on DVI when SLI?
On a side note:
I just disabled the other two PCI-E x16 lanes I am not currently using.
I just verified everything was connected - everything seemed solid to begin with.
Reseated RAM. Again.
Disabled a switch for LN2 functionality (not 100% sure what this is, but it was enabled).
My motherboard does support a debug feature. I will get back with the error codes next time the reboot fails. I'm usually just too frustrated to try and read it. =(
Sorry for the block of text, but thank you for anyone who reads and attempts to help!