A little more background on my story...
When I first powered on my system it would not show anything on the display.
About 6 or 7 power cycles later finally the BIOS information started up on the display and I was able to go into the BIOS and change settings. When it did this the board would beep a few times, but not in a decernable beep code. I was able to boot from the suppiled Intel Server Deployment Toolkit CD (which has a pretty crummy user interface by the way). I was able to boot the Windows 7 Setup DVD, but it would not recongnise the disk as having a system partition.
Since enabling the EFI Optimized Boot, when I power it on it beeps a few times, no decernable beep pattern, but nothing appears on the screen. The POST LEDs show a code of D6, which translates to "Trying to boot selection 6" - but I have no idea what that means.
So far I think Intel have a serious bug in their BIOS.
ok - I used the Clear CMOS jumper and now my system boots again - phew. There should be a strong warning in the manual about enabling the EFI Optimized Boot (just don't do it). As it turns out I would not want that setting anyway as it is incompatible with using the ICH10R RAID.
I was also able to get Windows 7 installed and running. Clearing the CMOS seems to have made it possible for Windows to install. When I get some more courage I'll try getting the RAID to work again, which is probably where things got screwed up in the first place.