Paul, see if it has a speaker plugged in, the pins for the speaker are normally in the same group of pins that the power and reset switches plug in. The word 'speaker' may be screen printer on the motherboard. It's also possible the motherboard has a buzzer mounted on the board. They are a round black plastic device with a hole in the middle. If there is a speaker and it is working, then unplug all the ram and internal usb plugs and turn it on. If it does not beep at you it's most likely the motherboard is crook.
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