Okay, so I got a celeron 540 and it boots up fine into the UEFI bios.
Next, I updated the firmware from about 3500 to 3904 (the IB support was back in the 3700 series of bios.)
However, when I switch the processor back to the i5, still no luck. it starts up, turns off for a short period, then turns on again and sticks with no video. No video whatsoever from the 9800GTX+ or from the integrated Intel 4000. What gives? Is there something i need to press?
For the record, I'm using the DVI out.
I put the celeron back, and it came up with a message saying "new processor!"press F1 to configure. And here I am, sitting here in the bios wondering if there's anything I can do to help the motherboard anticipate a new processor.