As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI-IN, FMC BLANKING IN & OUT. GROUNDED - YES. FOUND L FMC WAS LOCKED UP & R WAS TRYING TO SYNC BACK UP, NO FAULTS RT FMC. REBOOTED LT FMC REF FIM 34-61 TASK 804. FMC BITE TEST OK REF FIM 34-61 TASK 801 NO HISTORY 15 DAYS. ETOPS GROUND VERIFICATION COMPLETE.