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Code Message Description
0212* Keyboard Controller Failed Keyboard controller failed test. May require replacing
keyboard controller.
0213 Keyboard locked - Unlock
key switch
Unlock the system to proceed.
0220 Monitor type does not
match CMOS - Run
SETUP
Monitor type not correctly identified in Setup.
0230* Shadow Ram Failed at
offset: nnnn
Shadow RAM failed at offset nnnn of the 64k block at which
the error was detected.
0231* System RAM Failed at
offset: nnnn
System RAM failed at offset nnnn of in the 64k block at
which the error was detected.
0232* Extended RAM Failed at
offset: nnnn
Extended memory not working or not configured properly at
offset nnnn.
0250 System battery is
dead-Replace and run
SETUP
The CMOS clock battery indicator shows the battery is dead.
Replace the battery and run Setup to reconfigure the system.
0251 System CMOS checksum
bad - Default
configuration use
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.
0270* Real time clock error Real-Time Clock fails BIOS hardware test. May require board
repair.
0271 Check date and time
settings
BIOS found date or time out of range and reset the Real
-Time Clock. May require setting legal date (1991-2099).
0280 Previous boot incomplete -
Default configuration used
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 of wait
states, improper Setup settings can also terminate POST and
cause this error on the next boot. Run Setup and verify that
the wait-state configuration is correct. This error is cleared
the next time the system is booted.
0281 Memory Size found by
POST differed from CMOS
Memory size found by POST differed from CMOS.
02D0 System cache error - Cache
disabled
RAM cache failed and BIOS disabled the cache. On older
boards, check the cache jumpers. You may have to replace the
cache. See your dealer. A disabled cache slows system
performance considerably.
Solving computer problems
Chapter 3. Solving computer problems 11