Post Error Codes; Undetermined Problems - Lenovo C2 Series Hardware Maintenance Manual

POST error codes

Each time you power-on the system, it performs a series of tests that check the operation of the system
and some options. This series of tests is called the Power-On Self-Test, or POST. POST does the following
operations.
• Checks some basic system-board operations
• Checks the memory operation
• Starts the video operation
• Verifies that the boot drive is working
If the POST detects a problem, an error message appears on the screen. A single problem can cause several
error messages to appear. When you 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
Reboot and Select proper Boot device or Insert Boot
Media in selected Boot device

Undetermined problems

If this computer has a parallel ATA hard disk drive, make sure that the hard disk drive is jumpered as a
master and the optical drive is jumpered as a slave.
1. Power-off the computer.
2. Remove or disconnect the following components (if installed) one at a time.
a. External devices (modem, printer, or mouse)
b. Any adapters
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Lenovo C2/C3 SeriesHardware Maintenance Manual
Description/Action
The CMOS Date and/or Time are invalid. This error can
be resolved by readjusting the system time in AMI 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.
The BIOS was unable to find a suitable boot device. Make
sure the boot drive is properly connected to the computer.
Make sure you have bootable media.