There is another GFCI outlet elsewhere that they piggyback off of. If the other GFCI outlet trips, these will lose power. Now is the time to find the other outlet.
I have a GFCI outlet by my entrance door that protects itself, an outside outlet, a kitchen outlet, and a bathroom outlet.
I have a GFCI on an inverter that protects the outlets on my 2 entertainment centers, since it can provide power to those 2 outlets.
I have 3 outlets that are not protected by GFCI.
Get one of these testers. Note the button on it since some don't have the button. Plug it into one of your GFCI outlets and press the button. It will trip the GFCI. Then when you find it to reset it, you will know where it is forever.
