As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUAL FMC FAILURE WITH VTK DISPLAYED AND ASSOCIATED FAILURE. THE SYSTEM RESET AUTOMATICALLY AFTER LESS THAN 1 MIN. GROUNDED - YES. CYCLED A/C PWR AND ALIGNED ADIRUS - FMC CK OUT GOOD NO VTK DISPLAYED. FMC SYS OPS NML IAW B737-9 AMM 34-61-00.