HP Presario 1600 Presario 1660 Series Maintenance and Service Guide - Page 20

Clearing the Power-on Password - cmos battery

Page 20 highlights

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.

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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.