Lenovo ThinkCentre M90 Hardware Maintenance Manual page 39

5. Have the same software versions and levels
6. Have the same diagnostic diskettes (version)
7. Have the same configuration options set in the system
8. Have the same setup for operating-system-controlled files
Comparing the configuration and software setup between "working and non-working" systems will often
lead to problem resolution.
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Chapter 4 General checkout
33