Dead outlets, some GFCI, some not
Since 1 outlet worked when the gfci was reset and the other did not look for a light switch that could be controlling the upper outlet this is quite common. If there is no switch close by pull the outlet and see if the connecting tabs on the side of the outlet is/are broke. if broke and a wire goes to the upper section there is a switch some place or a circuit breaker is tripped, yes it could be a bad back stab but I would look for a switch or breaker first because 1/2 of the outlet is working.