Power On Self Test Messages - Compaq 1200US - Presario - Celeron 800 MHz Maintenance And Service Manual

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Illustrated Parts Catalog
Power-On Self Test (POST)
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 "Power-On Self-Test (POST) Codes" in the tables for a list of POST codes and their relevant
descriptions.
If the system is not functioning well enough to run POST, or if the display is
not functioning well enough to show POST error messages, refer to the
NOTE:
Troubleshooting tables.
Power-On Self-Test Messages
Probable Cause
DMA, timers, etc.
Probable Cause
Configuration incorrect
CMOS reflects that an invalid
configuration has been set.
Memory test data error
XX000YZZ RAM failure
Probable Cause
RAM failure
Memory test data error
XXOOOYZZ Ram failure
Probable Cause
Keyboard failure
304-Keyboard or System Unit Error
Probable Cause
Keyboard or system board error
Probable Cause
Mismatch in drive type or failure in the
diskette controller
Probable Cause
Mismatch in drive type
1780-Primary Hard Drive 0 Failure
Probable Cause
Disk 0 failed to respond
Hard drive format error
Probable Cause
Hard drive controller failure
Maintenance & Service Guide
Presario 1200 Series
| Notice | Preface
| Removal & Replacement Procedures
Pin Assignments
102-System Board Failure
162-System Options Not Set
RAM failure
XX000YZZ 201-Memory Error
301-Keyboard Error
601-Diskette Controller Error
605-Diskette Drive Error
1782-Hard Drive Controller
Model: 1245
| Product Description
| Battery Pack Operations
Recommended Action
Replace the system board.
Recommended Action
Run Computer Setup.
Run Computer Setup.
1. Replace the memory modules.
2. Replace the system board.
1. Replace the memory modules.
2. Replace the system board.
Replace the system board.
Recommended Action
1. Replace the memory modules.
2. Replace the system board.
1. Replace the memory modules.
2. Replace the system board.
Replace the system board.
Recommended Action
1. Ensure that keys are not depressed
during POST.
2. Reconnect the keyboard with the
computer off.
3. Replace the keyboard.
Recommended Action
1. Replace the keyboard.
2. Replace the TouchPad or mouse.
3. Replace the system board.
Recommended Action
1. Run Computer Checkup (TEST).
2. Check and/or replace cables.
3. Replace the system board.
Recommended Action
Run Computer Setup.
Recommended Action
1. Run Computer Checkup (TEST).
2. Replace the hard drive.
1. Run Computer Checkup (TEST).
2. Replace the hard drive.
Recommended Action
1. Run Computer Setup.
2. Replace the hard drive.
| Troubleshooting
| Specifications