Motherboards don't hum. Only fans and rotating hard disks hum. And all they need to hum is power.
Since we don't know your problem we can't suggest any solution or cause for it. What is your problem, and why do you think it's cause by a dead motherboard?
Athlon xp 2600+
ddr ram 512 mb
radeon 9600 pro
windows xp sp3
500 gb western digital hd
Suddenly pc wouldnt start.
I opened it. Tested psu with a thin wire. It started. So I know its not psu issue.
Forums suggest that it may be a dead mobo. But I am reluctant about it because it gives a humming sound.
I also tried to switch the power on and the reset cords, but it didnt work. So my question is, if a motherboard kicks the bucket does it still hums?