As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE WE RECEIVED A #1 FMC FAILURE WITH ASSOCIATED CAPTAIN'S ND VTX MESSAGE. THE PROBLEM RECTIFIED ITSELF AFTER 30 SECONDS. THE FMC OPERATED NORMALLY AFTERWARDS. GROUNDED - YES. ACCOMP B737-800 FIM TASK 34-61 #836 AND OPS CK PER 34-61-00. SYS OPS CKS NML, GND VERIFICATION SUCCESSFUL.