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C–4 404569-001 Service Reference Guide, dx2100 MT
POST Error Messages
CMOS Checksum Error.
Defaults Loaded
CMOS corrupt or bad
RTC battery.
Press F1 to save defaults.
Replace RTC battery.
Download the current ROM BIOS from
the HP Web and reflash the ROM BIOS.
ROM BIOS Checksum
Error - system halted
ROM BIOS may be
corrupted.
Download the most current ROM BIOS
from the Web and reflash the system
ROM.
Keyboard/Interface
Error
Keyboard controller
failure.
Reconnect keyboard with computer
turned off.
Check connector for bent or missing
pins.
Ensure that none of the keys are
depressed.
Replace keyboard.
Replace system board.
Keyboard Error or No
Keyboard Present
Keyboard not present or
system not responding
when keyboard controller
is initialized.
Reconnect keyboard with computer
turned off.
Check connector for bent or missing
pins.
Ensure that none of the keys are
depressed.
Replace keyboard.
Replace system board.
Hard Disk Install Failure Cannot find or initialize
the hard drive.
Check Computer Setup (F10 Setup) for
presence of hard drive.
Check drive cable connections.
Replace hard drive.
Memory Test Failure If POST detects an error
during memory testing,
additional information
appears about the type
and location of the
memory error.
Run Computer Setup (F10 Setup) or
Windows utilities.
Ensure memory modules are installed
correctly.
Verify proper memory module type.
Remove and replace memory modules
one at a time to isolate faulty module.
Replace the faulty memory module.
If error persists after replacing memory
module, replace the system board.
POST Error Messages
Screen Message Probable Cause Recommended Action