HP Compaq dc7100 MT Hardware Reference Manual page 19

Hardware Reference Guide
To open the access panel with the Smart Cover Lock engaged:
1. Turn off the computer properly through the operating system and
turn off any external devices.
2. Disconnect the power cord from the power outlet, and disconnect
any external devices.
3. Using the Smart Cover FailSafe Key, remove the two
tamper-proof screws that secure the Smart Cover Lock to the
chassis.
Removing the Smart Cover Lock Screws
4. Remove the access panel. Refer to
Access Panel."
To reattach the Smart Cover Lock, secure the lock in place with the
tamper-proof screws.
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Hardware Upgrades
"Removing the Computer
2–3