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"Compaq.com - Compaq Presario 1600 Series Maintenance and Service Guide - Models: 1650 and 1655
United States June 27, 2004
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Maintenance & Service Guide
Presario 1600 Series
Models: 1650 and 1655
| 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
performing the following steps:
1. Turn off the computer.
2. Disconnect the power cord.
3. Remove the battery pack.
4. Remove the keyboard.
5. Remove the RTC battery for 30
seconds. The password, together with
other Setup attributes, will be cleared.
6. Reassemble the computer.
7. 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.
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...1600%20SERIES%201650%20and%201655/ponpass.html (1 of 2)6/27/2004 2:52:44 AM