Hello RobCohen, thank you very much for contacting us through Intel Communities.
Since you already tested the motherboard, the recommendation I can give you is to try a BIOS update. There are 12 BIOS versions for this specific motherboard.
The following URL will show you the fixes and features add or update on each BIOS version. http://downloadmirror.intel.com/22828/eng/GA_0066_ReleaseNotes.pdf
If you remember which is the current BIOS version of the motherboard, please try the next BIOS version available.
If not, it will be necessary to try an old version first. Then, you will have to flash 3 or 4 versions in order to get to the latest BIOS V066.
Please check this article for additional instructions Desktop Boards — BIOS update instructions
By the time you see video initializing at your monitor, it it likely already too late to catch the window. Power off the system; then, when you power it back on, immediately begin pressing the <F2> key over and over as quickly as you can. You should catch the window then. Why is this happening? As folks have demanded faster and faster boot times, we had to make the windows for accepting function key presses smaller and smaller...
Hah if only it were that simple. Of course I've tried that method a bunch of times. Pressing F2 constantly from the second I give it power to when I see the POST graphic come up makes no difference. Eventually the buffer fills up and I can hear click click click from the PC speaker, but it never enters BIOS. I also can't get to F7 for BIOS update. F10 for boot menu, interestingly enough, does work.