HP Presario 1600 Presario 1600XL Series Maintenance and Service Guide - Page 85

Clearing the Power-On Password

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Presario 1600 Series Models: 1600T, 1600-XL140, 1600-XL141, 1600-XL142, 1600-XL143, 1600-XL144, 1600-XL145, 1600-XL146, 1600-XL147, and 1600-XL150 Before You Begin Specifications Removal Sequence Product Description Battery Operations Troubleshooting Parts Catalog Pin Assignments MSG Index Preliminary Steps Clearing the Power-On Password Power-On Self Test (POST) Compaq Diagnostics Diagnostic Error Codes Troubleshooting Without Diagnostics Solving Minor Problems Contacting Compaq Support Troubleshooting Clearing the Power-On Password Clearing the power-on password also NOTE: removes 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 Palmrest Cover with TouchPad. 5. Remove the keyboard. 6. Remove the Heatspreader. 7. Remove the RTC battery for about 30 seconds to ensure that the password is cleared. (The RTC battery is located underneath the heatspreader and next to the CD/DVD connector.) Not shown in illustration. 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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Presario 1600 Series
Models: 1600T, 1600-XL140, 1600-XL141, 1600-XL142, 1600-XL143,
1600-XL144, 1600-XL145, 1600-XL146, 1600-XL147, and 1600-XL150
Before You Begin
Product Description
Parts Catalog
Specifications
Battery Operations
Pin Assignments
Removal Sequence
Troubleshooting
MSG Index
Preliminary
Steps
Clearing the
Power-On
Password
Power-On Self
Test (POST)
Compaq
Diagnostics
Diagnostic
Error Codes
Troubleshooting
Without
Diagnostics
Solving Minor
Problems
Contacting
Compaq
Support
Troubleshooting
Clearing the Power-On Password
NOTE:
Clearing the power-on password also
removes 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
Palmrest Cover with TouchPad
.
5.
Remove the
keyboard
.
6.
Remove the
Heatspreader
.
7.
Remove the RTC
battery for about
30 seconds to
ensure that the
password is
cleared. (The RTC
battery is located
underneath the
heatspreader and
next to the
CD/DVD
connector.) Not
shown in
illustration.
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.