Post Error Messages - Compaq Presario 2510 Maintenance & Service Manual

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POST Error Messages

An error message displays if the POST encounters a problem. This test
automatically runs each time the system is turned on, checking assemblies
within the computer and reporting any errors found.
Click on an item for explanations of the error codes and a recommended
course of action.
Diskette Drive A or B
Error
Extended RAM failed at
offset nnn
Invalid NVRAM Media
Type
Operating System Not
Found
Real Time Clock Error
System Cache Error
System Timer Error
Probable Cause
Drive A: is present, but fails the BIOS POST
diskette tests
Probable Cause
Extended memory not working or not configured
properly
Probable Cause
nnn is a map of the bits at the RAM address which
failed the memory test
Probable Cause
Hard drive is not working or configured properly
Probable Cause
Hard drive is not working or configured properly
Probable Cause
Type of diskette drive A: not correctly identified
Probable Cause
Problem with NVRAM (CMOS) access
Probable Cause
Keyboard, I/O keyboard controller
(on system board) or mouse error
Probable Cause
Keyboard, I/O keyboard controller
(on system board) or mouse error
Probable Cause
Operating system cannot be located on
either drive A: or C:
Probable Cause
Parity error found in the system bus
Probable Cause
Parity error found in the I/O bus
Probable Cause
Real-time clock fails BIOS test
Probable Cause
RTC battery is dead
Probable Cause
System BIOS copied to Shadow RAM
Probable Cause
RAM cache failed the BIOS test
Probable Cause
CMOS is corrupted or modified incorrectly
Probable Cause
System RAM failed
Probable Cause
DMA, timers, etc.
Probable Cause
Displays the address nnn of the upper limit
of Upper Memory Blocks, indicating released
segments of the BIOS
Probable Cause
Video BIOS successfully copied to shadow RAM
Maintenance & Service Guide
Presario 2250 Series
2510, 2410 ES & 4240 ES Personal Computers
| Product Description
Removal & Replacement
| Specifications
Error Code Message Samples
Failing Bits nnn
Fixed Disk 0 or 1 Failure Incorrect Drive A Type
Keyboard Controller
Error
Parity Check 1
System Battery is Dead System BIOS Shadowed
System CMOS
Checksum Bad
UMB Upper Limit
Segment Address nnn
Diskette Drive A or B Error
Extended RAM failed at offset nnn
Failing Bits nnn
Fixed Disk 0 or 1 Failure
Fixed Disk Controller Failure
Incorrect Drive A Type
Invalid NVRAM Media Type
Keyboard Controller Error
Keyboard Error
Operating System Not Found
Parity Check 1
Parity Check 2
Real Time Clock Error
System Battery is Dead
System BIOS Shadowed
System Cache Error
System CMOS Checksum Bad
System RAM Failed at Offset, nnn
System Timer Error
UMB Upper Limit Segment Address nnn
Video BIOS Shadowed
| Troubleshooting
| Connector Pins
Fixed Disk Controller
Failure
Keyboard Error
Parity Check 2
System RAM Failed at
Offset, nnn
Video BIOS Shadowed
| Illustrated Parts
| Power Cord Requirements
Recommended
Action
1. Run Setup.
2. Replace the signal
cables.
3. Replace the drive.
Back to Top
Recommended
Action
1. Replace the
memory modules.
2. Replace the
system board.
Back to Top
Recommended
Action
1. Run Setup.
2. Replace the
system board.
Back to Top
Recommended
Action
1. Run Setup.
2. Replace the signal
cable.
3. Replace the hard
drive.
Back to Top
Recommended
Action
1. Run Setup.
2. Replace the
system board.
Back to Top
Recommended
Action
1. Run Setup.
2. Replace the
diskette drive.
Back to Top
Recommended
Action
Replace the system
board.
Back to Top
Recommended
Action
1. Replace the
keyboard.
2. Replace the
mouse.
3. Replace the
system board.
Back to Top
Recommended
Action
1. Replace the
keyboard.
2. Replace the
mouse.
3. Replace the
system board.
Back to Top
Recommended
Action
Run Setup.
Back to Top
Recommended
Action
1. Run Setup.
2. Replace the
memory modules.
3. Replace the
system board.
Back to Top
Recommended
Action
1. Run Setup.
2. Replace the ISA
board (modem).
Back to Top
Recommended
Action
Replace the system
board.
Back to Top
Recommended
Action
1. Replace the RTC
battery.
2. Run Setup.
Back to Top
Recommended
Action
Replace the system
board.
Status message only;
no action required.
Back to Top
Recommended
Action
Run Setup.
Back to Top
Recommended
Action
Run Setup.
Back to Top
Recommended
Action
Replace memory
modules.
Back to Top
Recommended
Action
Replace the system
board.
Back to Top
Recommended
Action
Run Setup.
Status message only;
no action required.
Back to Top
Recommended
Action
Run Setup.
Status message only;
no action required.
Back to Top
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