you might want to double check the circuit breakers - when they 'trip' they don't move to the 'off' position, they just disengage the circuit...the switch remains pretty much in the 'on' position and it often hard to determine that the breaker actually tripped.

Also, if the problem that tripped the GFCI is still present, it won't reset. You can usually tell by plugging in a lamp, switching it to ON, and then press the reset on the GFCI. If the lamp lights momentarily, you've got the right GFCI, but haven't yet found the cause of it tripping.