Im in the process of building a computer with the following specs:
Linkworld 2222 Case with 500W PSU
Asus P5B-VM BIOS 2107 or something like that
Intel Core 2 Duo E6300
2-GIGS of V-DATA PC2-5400 DDR2 RAM (2-sticks)
WD Raptor 74GB SATA
Pioneer DVR-111 DVD-RW
2-80MM Vantec Stealth Case Fans
When I press the power button it starts the processor and case fans for about 1/2 sec... then shutdowns... then 1-2 sec later it boots normally.
I tried unplugging all the power to my optical drives and HDD but still the same thing.
I have the 24PIN and 4PIN connector connected to the MOB.
I fix the problem. The PSU needs to have power in it (connected to power outlet and PSU switch is on) for a couple of seconds before booting up. If you just plug in the computer and turn it on you will get that delay.