Maintenance
& Service Guide
Presario 1900 Series
Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925
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Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery
Pack Operations
Clearing the Power-on Password
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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 performing
the following steps:
Turn off the computer.
Disconnect the power cord.
Remove the battery pack .
Remove the keyboard.
Disconnect the backlight cable from the
connector on the system board .
Using a conductive piece of material (piece of wire or tool)
simultaneously make contact with the two pads located at R37 on the system board or remove
the RTC battery located under the battery charger board for 5
seconds. The password, together with other Setup attributes, will be cleared.
Reassemble the computer.
Turn on the computer to verify that the power-on password has been
cleared. If it has not been cleared, repeat Steps
1 through 7.
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