Just built it. I am getting a strange high-pitched whirring noise from the power supply when I plug it in, but it still won't power up when I hit the power button.
I disconnected the power supply to the mainboard and the high-pitched whirring stops, but still no power.
I tried using a diffeent power supply, and had the same problem. I am at a loss atm.
Specs:
Microstar K8T neo2-F Skt 939
WD 1600JD 160GB SATA
512 MB DDR PC3200 400
ATI Radeon 9800 Pro 128 MB DDR AGP
AMD Athlon 64 3000 Skt 939