Lenovo 40221GU Hardware Maintenance Manual page 32

correct the cause of the first error message, the other error messages
probably will not appear on the screen the next time you turn on the
system.
POST Error Message
CMOS Date/Time Not Set
CMOS Battery Low
CMOS Checksum Bad
Primary Master Hard Disk Error
Primary Slave Hard Disk Error
Secondary Master Hard Disk Error
Secondary Slave Hard Disk Error
Keyboard error
System Halted
Press TAB to show POST screen
Chapter 6. Symptom-to-FRU Index
Description/Action
The CMOS Date and/or Time are
invalid. This error can be resolved
by readjusting the system time in
Phenix BIOS Setup.
The CMOS battery is no longer
functional.
Replace the battery.
Checksum of CMOS is incorrect.
The computer loads the default
configuration settings. This error
might indicate that CMOS has
become corrupt due to a weak
CMOS battery.
The IDE/ATAPI device configured
as Primary Master/Primary Slave/
Secondary Master/Secondary Slave
could not be found or initialized.
Make sure the hard drive is correctly
installed.
Cannot initialize the keyboard.
Make sure the keyboard is properly
connected to the computer and
that no keys are held pressed during
POST.
To purposely configure the
computer without a keyboard, set
keyboardless operation in Setup to
Enable. The BIOS then ignores the
missing keyboard during 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.
Pressing the TAB key permits the
user to toggle between the default
POST display screen and a custom
POST display screen.
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