As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FMC FAILURE AT CRUISE ALTITUDE. OPERATED NORMAL USING RIGHT FMC AFTER QRH ACCOMPLISHED. ACFT GROUNDED. PERFORMED FIM 34-61 TASK 836. FMC LEFT OPERATION RESTORED. ONE CIRCUIT BREAKER OPENED, THEN RESET ON P18-2 A6 FMC COMPUTER 1. ETOPS GROUND VERIFICATION SUCCESSFUL.