As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER NORMAL ENG START ON LT ENG, NO RESPONSE TO ENG WHEN THROTTLE ADVANCED FOR TAXI. NO EICAS MSG. UPON RESTART AT THE GATE ALL INDICATIONS NORMAL, ENG RUN AT GATE. ALL INDICATIONS NORMAL. THROTTLE ADVANCE NORMAL, ETOPS CATEGORY 'E': PROBLEMS WITH SYS, CRITICAL TO ETOPS.