HP Presario 1600 Presario 1660 Series Maintenance and Service Guide - Page 20
Clearing the Power-on Password - cmos battery
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Maintenance & Service Guide Presario 1660 Model MSG Index | Home Page | Notice | Preface | Product Description | Troubleshooting Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications Pin Assignments | Battery Pack Operations Clearing the Power-on Password Clearing the power-on password requires removing all Setup attributes that are programmed in the CMOS. If the password is not known, clear it by removing the RTC battery (located on the system board) as follows: 1. Turn off the computer. 2. Disconnect the power cord. 3. Remove the battery pack. 4. Remove the palmrest assembly. 5. Remove the keyboard and heatspreader. 6. Remove the modem 7. Remove RTC battery for 10 seconds, then replace it . 8. Reassemble the computer. 9. Turn on the computer to verify that the power-on password has been cleared. If it has not been cleared, repeat all steps above.