All outlets in my garage are off. It is GFCI so pressed the GFCI button and reset it but still does not work. How can I find what is wrong with the circuit. Where I can start from?
You start at the breaker box and make sure the breaker is not tripped. Then see if anything else on the circuit is working. Then take the GFCI out and see if there is power feeding it. Then trace the cables back until you find the problem.