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-OnSelf-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

Description/Action

 

 

CMOS Date/Time Not Set

The CMOS Date and/or Time are invalid. This error can

 

be resolved by readjusting the system time in AMI BIOS

 

Setup.

 

 

CMOS Battery Low

The CMOS battery is no longer functional. Replace the

 

battery.

 

 

CMOS Checksum Bad

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.

 

 

Primary Master Hard Disk Error

The IDE/ATAPI device configured as Primary

 

Master/Primary Slave/ Secondary Master/Secondary

Primary Slave Hard Disk Error

Slave could not be found or initialized. Make sure the

 

Secondary Master Hard Disk Error

hard drive is correctly installed.

 

 

Secondary Slave Hard Disk Error

 

 

 

Keyboard error

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.

 

 

System Halted

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.

 

 

Reboot and Select proper Boot device or Insert Boot

The BIOS was unable to find a suitable boot device. Make

Media in selected Boot device

sure the boot drive is properly connected to the computer.

 

Make sure you have bootable media.

 

 

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

18IdeaCentre Q190Hardware Maintenance Manual

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Lenovo Q190, 6281 manual Post error codes, Undetermined problems, Post Error Message Description/Action
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6281, Q190 specifications

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