Are you aware Ground Fault Circuit Interrupter (GFCI) devices usually have a 10 year life? That they should be tested at least once a month, and replaced if they fail to test properly. All devices have a test button and then a reset; some even have lights or alarms to indicate if they trip. They are installed in a lot of different areas, as the code has changed they are required in more places. Usually found in Kitchens, Bathrooms, garages, outdoors, and basement unfinished areas, laundry areas etc, One GFCI device can protect other outlets so sometimes one bathroom may also protect other bathrooms, or even an outside outlet. So if you have an outlet not working and no breaker is tripped it could well be a GFCI tripped somewhere. There have been advances in technology to make less nuisance tripping. Remember these devices are installed to protect people from getting shocked by electrical faults.