running asus p5ad2-e premium mobo, p4 3.2mhz cpu, 4x1gb ddr2 533, geforce7600 250mb card, 1x250gb and 1x1tb hard drive and a dvd drive, changed from 350psu to 550psu and added zalman cnps9500a cpu fan.
put computer back together, powered back on the computer without fan plugged in, plugged fan...