rsnelson wrote:
It looks and sounds like there is an issue. When I powered up my motherboard without a CPU (and memory), the q-code stayed on. I think the q-code ended up being 00 but cannot remember. In any case, the q-code light remained on until I shut off the power supply.
It sounds like the power supply is shutting down as I hear a relay click twice... once to turn on and once to turn off. Power supplies will do this when the motherboard does not detect the proper voltages to prevent further damage to the motherboard. The cause of this could be an issue with the power supply itself, the motherboard, or any of the motherboard components. The lights are remaining because they are drawing from the 5V standby supply which is not switched like the other power supply lines.
I would do the following for further diagnostics:
1) Disconnect everything from the motherboard except for power. Try to turn on the computer again. If it works then you know there is something wrong to a component connected to the power supply.
2) Remove the motherboard from the case. Inspect all pins to ensure they are not bent and not touching each other. Only have the power connected to the motherboard. Try to cycle power again. Possibly the motherboard was shorted to the case.
3) Disconnect the power supply completely from the motherboard and all components and test the power supply by itself. Try to jump start the power supply. It is important not to try and do this with the motherboard connected or you will fry your motherboard. See https://www.overclockersclub.com/guides/atx_psu_startup/ for example. I have found that sometimes a load is necessary such as an old hard drive. It is helpful to have a digital voltmeter or multimeter to verify the power supply voltages.
does the pins ok?
