"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting
Preliminary Steps
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
Before running POST, complete the following preliminary steps:
1. If a power-on password has been established, type the password
and press the Enter key. If the password is not known,
clear the
password .
2. Run Computer Checkup.
3. Turn off the computer and its external devices.
4. Disconnect any external devices that you do not want to test. Do
not disconnect the printer if you want to test it or use it to log error
messages.
IMPORTANT:
IMPORTANT: If the problem only occurs when an external device
is connected to the computer, the problem may be related to the
external device or its cable. Verify this by running POST with and
without the external device connected.
5. Install loopback plugs in the serial and parallel connectors if you
would like to test these ports.
6. Ensure the hard drive is installed in the computer.
7. Ensure that the battery pack is inserted in the computer and the
computer is connected to an external AC power source.
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