Need some advice. I connected a new power supply to a computer which was not working. The old PSU was only registering .1V when it should have been 5V. Anyway, hooked it up to the motherboard. No response. Not even a beep. No lights. No nothing. Anything I can do to test my mother board out? I know I can buy a diagnostic board but I would rather do some test with my multimeter. Like anyone know how to test the power switch? Any help would be greatly appreciated!