Power-On Self Test (Post) Messages; Table A-3. Power -O N Selft - Compaq Deskpro EP 6233 Technical Reference Manual

Appendix A Error Messages and Codes
A.4

POWER-ON SELF TEST (POST) MESSAGES

Table A–3. Power-On Self Test (POST) Messages
Error Message
Bad PnP Serial ID Checksum
Address Lines Short!
Cache Memory Failure, Do Not Enable
Cache!
CMOS Battery Failed
CMOS Checksum Invalid
CMOS System Options Not Set
CMOS Display Type Mismatch
CMOS Memory Size Mismatch
CMOS Time and Date Not Set
Diskette Boot Failure
DMA Bus Timeout
DMA Controller Error
Drive Not Ready Error
Diskette Drive Controller Failure
Diskette Drive Controller Resource
Conflict
Diskette Drive A: Failure
Diskette Drive B: Failure
Gate A20 Failure
Invalid Boot Diskette
Keyboard Controller Error
Keyboard is Locked...Please Unlock It
Keyboard Stuck Key Detected
Master DMA Controller Error
Master Interrupt Controller Error
Memory Size Decreased
NVRAM Checksum Error, NVRAM
Cleared
NVRAM Cleared By Jumper
NVRAM Data Invalid, NVRAM Cleared
Off Board Parity Error Addr. (HEX) = X
Parallel Port Resource Conflict
PCI Error Log is Full
PCI I/O Port Conflict
PCI Memory Conflict
Primary Boot Device Not Found
Primary IDE Cntrl. Resource Conflict
Primary Input Device Not Found
Secondary IDE Controller Resource
Serial Port 1 Resource Conflict
Serial Port 2 Resource Conflict
Slave DMA Controller Error
Slave Interrupt Controller Error
Static Device Resource Conflict
System Board Device Resource
Conflict
System Memory Size Mismatch
NOTE:
PCI and PnP messages are displayed with bus, device, and function information.
A-2 Compaq Personal Computers
Table A-3.
Power-On Self Test (POST) Messages
Probable Cause
Serial ID checksum of PnP card was invalid.
Error in address decoding circuitry on system board.
Defective cache memory, CPU has failed.
Low RTC/CMOS battery
Previous and current checksum value mismatch.
Corrupt or non-existant CMOS values.
Graphics/video type in CMOS does not match type detected by
BIOS.
Memory amount detected does not match value stored in CMOS.
Time and date are invalid.
Boot disk in drive A: is corrupt.
Bus driven by device for more than 7.8 us
Error in one or both DMA controllers.
BIOS cannot access the diskette drive.
BIOS cannot communicate with diskette drive controller.
Diskette drive controller has requested a resource already in use.
BIOS cannot access drive A:.
BIOS cannot access drive B:
Gate A20 of keyboard controller not working.
BIOS can read but cannot boot system from drive A:.
Keyboard controller failure.
Locked keyboard.
Key pressed down.
Error exists in master DMA controller.
Master interrupt controller failure.
Amount of memory detected is less than stated value in CMOS.
ESCD data was re-initialized due to NVRAM checksum error.
NVRAM has been cleared by removal of jumper.
Invalid entry in ESCD.
Parity error occurred in expansion memory, x= address of error.
Parallel port has requested a resource already in use.
PCI conflict error limit (15) has been reached.
Two devices requested the same resource.
Two devices requested the same resource.
Designated primary boot device could not be found.
Primary IDE controller requested a resource already in use.
Designated primary input device could not be found.
Secondary IDE controller has requested a resource already in use.
Serial port 1 requested a resource already in use.
Serial port 2 requested a resource already in use.
Error exists in slave DMA controller.
Slave interrupt controller failure.
A non-PnP ISA card has requested a resource already in use.
A non-PnP ISA card has requested a resource already in use.
Amount of memory detected on system board is different from
amount indicated in CMOS.
Changed - March 1998