Acer Aspire TC-780 Service Manual page 99

Message Displayed
CMOS Checksum
Bad
Miscellaneous
Message Displayed
KBC BAT Test failed
Keyboard Error
PS/2 Keyboard not
found
PS/2 Mouse not
found
Keyboard/Interface
Error
Unlock Keyboard
System Halted
<INS> Pressed
Password check
failed
Unknown BIOS error.
Error code = 004Ah
Unknown BIOS error.
Error code = 004Bh
Floppy Controller
Failure
Aspire TC-780 Desktop Computer Service Guide
Description
CMOS contents failed the Checksum check. Indicates that the CMOS data has
been changed by a program other than the BIOS or that the CMOS is not retaining
its data due to malfunction. This error can typically be resolved by using AMIBIOS
Setup.
Description
Keyboard controller BAT test failed. This may indicate a problem with keyboard
controller initialization.
Keyboard is not present or the hardware is not responding when the keyboard
controller is initialized.
PS/2 keyboard support is enabled in the BIOS setup but the device is not detected.
PS/2 mouse support is enabled in the BIOS setup but the device is not detected.
Keyboard controller failure. This may indicate a problem with system hardware.
PS/2 keyboard is locked. User needs to unlock the keyboard to continue the BIOS
POST.
The system has been halted. A reset or power cycle is required to reboot the
machine. This message appears after a fatal error has been detected.
Indicates that <INS> key is pressed during the BIOS POST. The POST will load and
use default CMOS settings.
The password entered does not match the password set in the setup. This condition
may occur for both Supervisor and User password verification.
This message is displayed when ADM module is not present in the AMIBIOS8
ROM.
This message is displayed when language module is not present in the AMIBIOS8
ROM.
Error in initializing legacy Floppy Controller.
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