Power On Self Test Messages - Compaq PRESARIO Presario 1255 Maintenance And Service Manual

Models: 1255, 1256, 1260, 1262, 1266, 1267, 1272, 1273, 1274, and 1275
Before You Begin
Removal Sequence
Product Description
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
Presario 1200 Series
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
Specifications
Troubleshooting
Pin Assignments
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.
1. Replace the memory modules.
2. Replace the system board.
1. Replace the memory modules.
2. Replace the system board.
Replace the system board.
1. Ensure that keys are not depressed
during POST.
2. Reconnect the keyboard with the
computer off.
3. Replace the keyboard.
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.
Parts Catalog
Battery Operations
Recommended Action
Replace the system board.
Recommended Action
Recommended Action
Recommended Action
Recommended Action
Index