Appendix A Error Messages and Codes
Compaq Personal Computers
Changed - November 2000
A-2
A.3 POWER-ON SELF TEST (POST) MESSAGES
Table A–2. Power-On Self Test (POST) Messages
Table A-2.
Power-On Self Test (POST) Messages
Error Message Probable Cause
Invalid Electronic Serial Number Chassis serial number is corrupt. Use Setup to enter a valid number.
Network Server Mode Active (w/o
kybd)
System is in network mode.
101-Option ROM Checksum Error A device’s option ROM has failed/is bad.
102-system Board Failure Failed ESCD write, A20, timer, or DMA controller.
150-Safe POST Active An option ROM failed to execute on a previous boot.
162-System Options Not Set Invalid checksum, RTC lost power, or invalid configuration.
163-Time & Date Not Set Date and time information in CMOS is not valid.
164-Memory Size Error Memory has been added or removed.
201-Memory Error Memory test failed.
213-Incompatible Memory Module BIOS detected installed DIMM(s) as being not compatible.
216-Memory Size Exceeds Max Installed memory exceeds the maximum supported by the system.
301-Keyboard Error Keyboard interface test failed (improper connection or stuck key).
303-Keyboard Controller Error Keyboard buffer failed empty (8042 failure or stuck key).
304-Keyboard/System Unit Error Keyboard controller failed self-test.
404-Parallel Port Address Conflict Current parallel port address is conflicting with another device.
510-Slpash Image Corrupt Corrupted splash screen image. Restore default image w/ROMPAQ.
601-Diskette Controller Error Diskette drive removed since previous boot.
912-Computer Cover Removed
Since Last System Start Up
Cover (hood) removal has been detected by the Smart Cover
Sensor.
917-Expansion Riser Not Detected Expansion (backplane) board not seated properly.
1720-SMART Hard Drive Detects
Imminent Failure
SMART circuitry on an IDE drive has detected possible equipment
failure.
1721-SMART SCSI Hard Drive
Detects Imminent Failure
SMART circuitry on a SCSI drive has detected possible equipment
failure.
1801-Microcode Patch Error A processor is installed for which the BIOS ROM has no patch.
Check for ROM update.
1998-Master Boot Record Backup
Has Been Lost
Backup copy of the hard drive master boot record is corrupted. Use
Setup to restore the backup from the hard drive.
1999-Master Boot Record Has
Changed. Press Any Key To Enter
Setup to Restore the MBR.
If Master Boot Record Security is enabled, this message indicates
that the MBR has changed since the backup was made.
2000-Master boot Record hard drive
has changed
The hard drive has been changed. Use Setup to create a backup of
the new hard drive.
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