As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH FMC P/RST LIGHTS ILLUMINATED WITH NO MESSAGE ON THE SCRATCH PAD. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 FMC IAW AMM 34-61-02-07-01. PERFORMED A SOFTWARE VERIFICATION IAW AMM 34-61-00/201. VERIFIED FMCS PERFORMANCE FACTORS ADJUSTMENTS IAW AMM 34-61-00-800-801. PERFORMED FMC SYSTEM OPS TEST IAW AMM 34-61-00-710-801. OPS TESTED GOOD.