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Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279

 | Home Page | Notice | Preface | Product Description | Troubleshooting  
Illustrated Parts Catalog
Removal & Replacement Procedures | Specifications
Pin Assignments
| Battery Pack Operations


Troubleshooting

Clearing the Power-on Password

RTC Battery

Clearing the power-on password requires removing all Setup attributes that are programmed in the CMOS. The RTC battery msgbub1.gif (1074 bytes) is located on the system board.

If the password is not known, clear it by performing the following steps:

1. Turn off the computer.

2. Disconnect the power cord.

3. Remove the battery pack.

4. Remove the Palmrest Cover with Touch Pad.

5. Remove the heatspreader.

6. Remove the keyboard.

7. Remove RTC battery for 30 seconds and 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 Steps 1 through 9.

 

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