As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START MCDU #1 WENT BLANK WITH TRANSFER OF POWER FROM APU TO ENGINE DRIVEN GENERATORS. GROUNDED - YES. CYCLED AIRCRAFT POWER, ACCOMPLISHED FMC BITE REF B737-800 FIM 34-61 TASK 801 NO FAULTS FOUND. GROUND VERIFICATION CHECKS NORMAL.