It is unlikely that an outlet in that location would be GFI protected. Nor does it need to be.
Turn off circuit breaker. Remove the cover plate. Remove the outlet from the box. See if it has been wired using "quick connect" holes in the back as shown in the video. If it has, remove the wires from the quick holes and put them under the screw terminals. There are little release holes next to the quick connect holes. Using a small tool (another piece of wire works well) press in release hole and pull the wire out. Usually you can remove the wire by simply pulling and twisting the wire to get it out. If you can't get the wires out of the quick connect holes, just clip them off as close as you can. Strip back 3/4" of insulation and put them under the screws.
The "quick connects" are fast and easy (electricians love them) but are known to develop bad connections after a period of time (usually about 10 years). The bad connection can be at the non-working outlet or it can be at the outlet upstream or just ahead of the non-working outlet. If putting the wires under the screw terminals does not restore power do the same thing to the other outlets in the room.
Did you get the voltage sensor as previously recommend? You should, it is a great tool and easy to use. If you did, after pulling the outlet from the wall and turn the power back on. Hold the voltage sensor next to the black wire. If it beeps and flashes the bad connection is at that outlet. If does not, the bad connection is at previous outlet that is feeding this one.
If you find that the quick connects were used you should start changing all of your outlets because the bad connections will continue to occur at other outlets.
Wires should be bent and put under the screws in the direction that the screw turns to tighten.