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Trace the positive ( red ) battery cable from the battery to the main under hood fuse block and see if it has a fuse where the cable bolts in the fuse block. Most newer cars have a high amp fuse to protect the system from this.
One question with many answers. It could be the starter, or a good battery with dirty or bad cable connections or a loose connection on the wire to the starter. Did the problem occur gradually or all of a sudden? Usually the starter will begin to warn you before it fails. A bad rotor, distributor or alternator will not prevent the car from cranking.
check for damp on floor in car, when you find it pull back the carpet and follow the cable's you should find a few loom connectors, check for green or blueish mould on the copper connectors it will be your problem. replace the loom or cheaper way is to cut out the connectors and replace them with a junk yard special. good luck.
Check the main fuses under the hood. There are several large ones there. A loose connection on one of them could have caused the sudden, complete electrical failure you described. If it is a loose connection, it would certainly explain why it "came back to life" by itself.
Also, might you possibly have any sort of aftermarket security system that has an immobilizer feature on it? While I wouldn't expect this to disable the entire car including the radio, if it were incorrectly installed I suppose it could.
Honda's have a main fuse or breaker under the hood, if it goes, the car is dead as a stone, and jumpstarting it will not work.
The fuse is in line with the Positive(red) battery cable, follow it from the battery to each stop at some point yo will find the fuse or breaker. If it is a breaker it will have a reset button, if it is a fuse you will have to replace it. It should be available at any decent auto parts store.