Lenovo System x3550 M5 Installation And Service Manual page 962

1. If the system was recently installed, moved, or serviced, make sure the battery is properly
seated.
2. Check the Lenovo support site for an applicable service bulletin or firmware update that
applies to this error.
3. Replace the CMOS battery.
4. (Trained technician only)Replace the system board
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Lenovo System x3550 M5 Installation and Service Guide