Post Error Messages - HP Compaq d220 MT Reference Manual

An error message results if the Power-On Self-Test (POST) encounters a problem. This test runs
when the system is turned on, checking assemblies within the computer and reporting any errors
found.
Not all computers use all of the codes listed.
Recommended Actions are to be taken in incremental steps. Perform one step at a time and
continue only if the action does not cure the problem.

POST Error Messages

Screen Message
Gate 20 Error
Parity Error
Boot Failure...
Invalid Boot Diskette
Drive Not Ready
Drive A: Error
Insert BOOT Diskette In
A:
Service Reference Guide, d200
POST Error Messages
Probable Cause
BIOS cannot access
memory over 1MB.
Fatal memory parity
error. System halts after
displaying this message.
BIOS could not boot from
the device. This message
is usually followed by
information about the
specific device.
Diskette in drive A: not
bootable.
BIOS could not configure
drive A: during POST.
BIOS could not configure
drive A: during POST.
BIOS could not find a
bootable diskette in drive
A:.
336493-004
Recommended Action
Reseat memory modules.
Replace memory modules.
Reseat memory modules.
Replace memory modules.
Reseat the device data and power
cables.
Replace the device data cable.
Replace the device.
Replace the system board.
Replace the diskette.
Reseat the device data and power
cables.
Replace the device data cable.
Replace the device.
Replace the system board.
Reseat the device data and power
cables.
Replace the device data cable.
Replace the device.
Replace the system board.
Replace the diskette.
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