Bios Post Codes And Messages; Bios Post Messages - Acer AB2x280 F1 Service Manual

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BIOS POST codes and messages

BIOS POST Messages

During the Power-On Self-Test (POST), the BIOS will check for problems. If a problem is found, the BIOS will
activate an alarm or display a message. The following is a list of such BIOS messages.
BIOS Message
Failure Fixed Disk
Stuck key
Keyboard error
Keyboard Controller Failed
Keyboard locked - Unlock key switch
Monitor type does not match CMOS - Run
SETUP
Shadow Ram Failed at offset: nnnn
System RAM Failed at offset: nnnn
Extended RAM Failed at offset: nnnn
System battery is dead - Replace and run
SETUP
System CMOS checksum bad - Default
configuration used
System timer error
Real time clock error
Check date and time settings
Previous boot incomplete - Default
configuration used
Memory Size found by POST differed
from CMOS
Chapter 9
Description
Fixed disk is not working or not configured properly. Check to see if fixed
disk is attached properly. Run Setup. Find out if the fixed-disk type is
correctly identified.
Stuck key on keyboard.
Keyboard not working.
Keyboard controller failed test. May require replacing keyboard controller.
Unlock the system to proceed.
Monitor type not correctly identified in Setup
Shadow RAM failed at offset
detected.
System RAM failed at offset
detected.
Extended memory not working or not configured properly at offset
The CMOS clock battery indicator shows the battery is dead. Replace the
battery and run Setup to reconfigure the system.
System CMOS has been corrupted or modified incorrectly, perhaps by an
application program that changes data stored in CMOS. The BIOS installed
Default Setup Values. If you do not want these values, enter Setup and
enter your own values. If the error persists, check the system battery or
contact your dealer.
The timer test failed. Requires repair of system board.
Real-Time Clock fails BIOS hardware test. May require board repair.
BIOS found date or time out of range and reset the Real-Time Clock. May
require setting legal date (1991-2099).
Previous POST did not complete successfully. POST loads default values
and offers to run Setup. If the failure was caused by incorrect values and
they are not corrected, the next boot will likely fail. On systems with control
wait states
of
, improper Setup settings can also terminate POST and
cause this error on the next boot. Run Setup and verify that the waitstate
configuration is correct. This error is cleared the next time the system is
booted.
Memory size found by POST differed from CMOS.
nnnn
of the 64k block at which the error was
nnnn
of in the 64k block at which the error was
Chapter 9
nnnn
.
77

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