Presario 305 Model
Before You Begin |
| Specifications |
| Parts Catalog |
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Removal Sequence |
| Troubleshooting |
| Battery Operations |
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| Index |
Product Description |
| Pin Assignments |
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Power-On Self Test (POST)
Running POST
The
To run POST, complete the following steps:
1.Complete the Preliminary steps.
2.Turn on the computer.
If POST does not detect any errors, the computer beeps once or twice to indicate that POST has run successfully, and the computer boots from the hard drive (or from a bootable diskette if one is installed in the diskette drive).
If POST detects an error, it is indicated by screen and/or audible messages. Refer to the following tables for a list of POST codes and their relevant descriptions. If there is more than one recommended action, only try the later actions in the list if the first action recommended does not solve the problem.
If the system is not functioning well enough to run POST, or if the NOTE: display is not functioning well enough to show POST error messages,
refer to the Troubleshooting tables.
102 | System board failure |
162 | System options not set |
XX000YZZ 201 | Memory Error |
301 | Keyboard Error |
304 | Keyboard or System Unit Error |
601 | Diskette Controller Error |
605 | Diskette Drive Error |
1780 | Primary Hard Drive 0 Failure |
1782 | Hard Drive Controller |
Power-On Self-Test Messages
102-System Board Failure
Probable Cause | Recommended Action |
DMA, timers, etc. | Replace the system board. |
162-System Options Not Set
Probable Cause | Recommended Action |
Configuration incorrect | Run Computer Setup. |
CMOS reflects that an invalid | Run Computer Setup. |
configuration has been set. |
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| XX000YZZ |
Probable cause | Recommended action |
RAM failure | 1. Replace the memory module. |
2.Replace the system board.
Memory test data error | 1. | Replace the memory module. |
| 2. | Replace the system board. |
XX000YZZ RAM failure | Replace the system board. | |
301-Keyboard Error
Probable Cause 
Recommended Action
Keyboard failure 1. Ensure the keys are not depressed during POST.
2.Reconnect the keyboard with the computer off.
3.Replace the keyboard.
Probable
Cause
Keyboard or system board error
Recommended Action
1.Replace the keyboard.
2.Replace the TouchPad or mouse.
3.Replace the system board.
Probable Cause
Mismatch in drive type or failure in the diskette controller
Recommended Action
1.Run Computer Checkup (TEST).
2.Check and/or replace cables.
3.Replace the system board.
Probable Cause | Recommended | |
Action | ||
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Mismatch in drive type 
Run Computer Setup. 
Probable Cause | Recommended Action |
Disk 0 failed to respond | 1. Run Computer Checkup (TEST). |
2.Replace the hard drive.
Hard drive format error 1. Run Computer Checkup (TEST).
2.Replace the hard drive.
Probable Cause
Hard drive controller failure
Recommended Action
1.Run Computer Setup.
2.Replace the hard drive.