Resetting The Notebook - HP COMPAQ NC4200 Maintenance And Service Manual

Product Description

1.2 Resetting the Notebook

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
"Miscellaneous Plastics/ Hardware Kit,"
information).
2. Remove the real-time clock (RTC) battery (refer to
Section 6.24, "RTC Battery,"
removing and replacing the RTC battery).
3. Wait approximately 5 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 have been cleared.
1–4
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Maintenance and Service Guide
Section 4.3,