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3 Troubleshooting your computer60
0251 System CMOS
checksum bad - Default
configuration used
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.
0260 System timer error* The timer test failed. Requires repair of
system board.
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.
02B0 Diskette drive A error
02B1 Diskette drive B error
Drive A: or B: is present but fails the BIOS
POST diskette tests. Check to see that the
drive is defined with the proper diskette
type in Setup and that the diskette drive is
attached correctly.
02B2 Incorrect Drive A type -
run SETUP
Type of floppy drive A: not correctly
identified in Setup.
02B3 Incorrect Drive B type -
run SETUP
Type of floppy drive B: not correctly
identified in Setup.
Error Messages Corrective Action
TMC110-en.book Page 60 Friday, March 21, 2003 2:02 PM