hello, have you tried to pull any codes from the computer, does the engine crank
Often what i've seen with this year of accord is the same situation your describing. in one case it was the imobilizer in another it was the pcm and in the last one i had all that was needed was for it to be reprogramed by the honda hds. one thing you can try is get in the car with all doors shut and cycle the key on then off 5 times and then try to restart. If that doesn't work your more than likely going to find a honda repair shop that has the hds.
ASE Certified Technician
Diploma in auto tech/high performance engines. ASE certs in hvac, brakes, elec. sys, steering/susp.