Acer C110 Series manual Troubleshooting your computer

60	3 Troubleshooting your computer
Error Messages	Corrective Action

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	Previous POST did not complete successfully.
incomplete - Default	POST loads default values and offers to run
configuration used	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.