Lenovo ThinkCentre 3656 Hardware Maintenance Manual page 120

4. If the cover is secured with thumbscrews, install them.
5. Reconnect the external cables and power cords to the computer. See "Rear connectors" on page 93.
6. If you have replaced the system board, you must update (flash) the BIOS. See "Flash update procedures"
on page 467.
7. Some FRU replacements require the configuration to be updated. See Chapter 6 "Using the Setup
Utility" on page 39.
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