As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: PILOT REPORTS DURING CRUISE, BOTH FMC PROMPTS DISAPPEARED IN BOTH CDUS MAP DISPLAYS DISAPPEARED ON BOTH PFDS FOR ABOUT 1 MINUTE. THEN RETURNED TO NORMAL. MAINTENANCE ACCOMPLISHED FIM TASK 31-63-00-810-809. NO FAILURES IN CURRENT STATUS OF CDS BITE. NO FAILURES FOUND IN FMC BITES. OPS NORMAL AT THIS TIME.