Asus KFN5D-SLI Motherboard Problem???

[rkoenn]

I am pretty experienced in building systems having probably built 300+ over the years but have a problem with a new dual Opteron board, the Asus KFN5D-SLI. I just put the system together last night for a buddy with 2 Opteron 2210s. This is the first time I have used these new Socket F CPUs. It also has a PNY 1400 video card, 8 GB RAM (EEC/Registered). 3 SATA HDDs, Antec 550W power supply, DVD drive, and that is pretty much it. Also at this point in time, I did not have CPU coolers on yet as they no longer come with the CPUs and I have them arriving tomorrow. I assembled everything and when power is applied to the power supply a good power LED on the board shows green. However, I only wanted to power up for a few seconds prior to installing the CPU fans tomorrow, the system does not power up when I just attempted to to verify the machine would work. I have checked all the items I could think of with no luck. I guess one question is is there any link between not having the CPU fans installed and prevention of power up? I didn't think there was and know on all the past systems I have worked on that there is none, I mean how can the board know whether a CPU fan is installed and operating before the board even starts? I am hoping that maybe there is because if not I am at a loss at this time to know what is wrong. With an "exotic" board and system like this I don't have the spare parts to do much troubleshooting. Any help, knowledge, suggestions would be greatly appreciated.

Thanks in advance.