So I just built a 6 280x rig, with a Gigabyte 990FX motherboard. It powers on just fine soon as I hit my powerswitch, but I cant get anything to display on my monitor. I have a newer Acer monitor with an HDMI cable connected to the first GPU, also have a keyboard plugged into the MBs keyboard port, and a mouse in the USB 2.0 port.
Ive tried a DVI cord as well, but the monitor still wont recognize that any cable is connected. I just need to boot into BIOS so I can start setting that up. So what else could I do to get the monitor to recognize?
You may need to create
Dummy Plugs to trick the OS into thinking you have monitors attatched to all of the cards.
If that doesn't take care of it, you may have a power problem. Try booting with just two or three cards.