Same motherboard, similar problem, with no reboot or boot after the installation of 116 updates to a newly installed 32 bit Windows Vista Business O.S. Got the three long beeps and no monitor light-up after hearing some initial hard drive activity and fans running, etc. Tried re-seating the four Rambus sticks (2 X 256 MB and 2 X 128 MB) and several power up and down cycles, unplugging and replugging the power cord, resetting the jumper for the C.M.O.S. and re-seating the new button cell -- all with no joy, just three long beeps or no beeps at all. Re-seated the V.G.A. card and tried to boot each of the two hard drives (XP Pro/Win Vista dual-boot) individually, again with no joy. Next tried reversing the order of the four RAM modules, with the two 128 MB sticks nearest to the C.P.U. and the two 256 MB sticks in the other slots. To my pleasure and amazement the P.C. booted. I later discovered that the 116 updates failed to install, I assume due to the P.C.'s improper shutdown/reboot sequence. I know this posting is many months after this series of replies to your initial post and I am guessing you moved on long ago. Just wanted to let you know that I found your post in my own search for a solution to the problem and to say it is unfortunate that you did not have the nice outcome that I now enjoy.
