I cannot get my computer to turn on or show any sign of getting power. I have replaced the power supply, changed motherboards, changed the battery on the motherboard, check connections and the power switch. I have taken the power supply to a computer store and had them test the power supply so I know it is okay. I have checked the wiring to the switches to be sure they are on correctly. I’m lost after this. I don’t even get any lights or any sounds from the power supply that it is starting up.
