Clearing A Password - Compaq Evo n410c - Notebook PC Maintenance And Service Manual

1.2 Clearing a Password

If the notebook you are servicing has an unknown password,
follow these steps to clear the password. These steps also clear
CMOS.
1. Prepare the notebook for disassembly. Refer to Section 5.3,
"Preparing the Computer for Disassembly," for more
information.
2. Remove the real time clock (RTC) battery (refer to Section
5.10, "Real Time Clock (RTC) Battery").
3. Wait approximately five minutes.
4. Replace the RTC battery and reassemble the notebook.
5. Connect AC power to the notebook. Do not reinsert any
battery packs at this time.
6. Turn on the notebook.
All passwords and all CMOS settings are clear.
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