"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1683, 1685, 1687, 1688, and 1690
| United States June 27, 2004 |
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Maintenance & Service Guide for Presario 1600 Series
(Models
Home Page Notice Preface Product Description Troubleshooting
Removal & Replacement Procedures Specifications Pin Assignments Battery
Troubleshooting
Running POST
To run POST, complete the following steps:
Turn off the computer, then turn on the computer.
If POST does not detect any errors, the computer will not beep. This indicates successful completion of POST test. POST has run successfully and boots from the hard drive (or from a bootable diskette if one is installed in the diskette drive).
If POST detects errors, the errors are indicated by screen and/or audible messages. Refer to
If the system is not functioning well enough to run POST, or if the display is not NOTE: functioning well enough to show POST error messages, refer to the
Troubleshooting tables.
NOTE: The following routines are sorted by their test point numbers assigned in the BIOS code. Their actual orders as executed during POST can be quite different.
Code |
| Beeps |
| POST Routine Description |
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02h |
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| Verify Real Mode |
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03h |
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| Disable |
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04h |
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| Get CPU type |
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06h |
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| Initialize system hardware |
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