Compaq Presario 1900 Presario 1900 Series Maintenance and Service Guide - Page 84

Clearing the, Power-on, Password - power cord

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Maintenance & Service Guide Presario 1900 Series Models: 1900T, 1905, 1906, 1910, 1915, 1919, 1920, 1922, 1925, 1926, 1927, 1928, 1929, and 1930 Before You Begin Removal Sequence Product Description Specifications Troubleshooting Pin Assignments Parts Catalog Battery Operations Index Troubleshooting 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 performing the following steps: 1. Turn off the computer. 2. Disconnect the power cord. 3. Remove the battery pack . 4. Remove the keyboard. 5. Disconnect the backlight cable from the connector on the system board. 6. 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. 7. Reassemble the computer. 8. Turn on the computer to verify that the poweron password has been cleared. If it has not been cleared, repeat Steps 1 through 7.

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Maintenance & Service Guide
Presario 1900 Series
Models: 1900T, 1905, 1906, 1910, 1915, 1919, 1920,
1922, 1925, 1926, 1927, 1928, 1929, and 1930
Before You Begin
Specifications
Parts Catalog
Removal Sequence
Troubleshooting
Battery Operations
Product Description
Pin Assignments
Index
Troubleshooting
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
performing the
following steps:
1.
Turn off the computer.
2.
Disconnect the power
cord.
3.
Remove the battery
pack
.
4.
Remove the keyboard.
5.
Disconnect the
backlight cable from
the connector on the
system board.
6.
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.
7.
Reassemble the
computer.
8.
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.