Have an ECS K7VMM+3.1,AMD K7,512 RAM,40GIG HD.From the manual of m/b pin 6 (pwr_sw_p) + 8 (pwr_sw_n) go to the wires connected to the power on switch (bl-w).I'm taking that bl is +. I have tried to reverse but the same thing happens,cant turn computer off. The only way to turn off is to hold down button for 5 seconds. Its my dughters and just trying to fix for her.