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Chapter 4. General Checkout - Lenovo IdeaCentre B5 Hardware Maintenance Manual

All-in-one desktop computer.
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General Checkout
General error messages appear if a problem or conflict is found by an
application program, the operating system, or both. For an explanation
of these messages, refer to the information supplied with that software
Use the following procedure to help determine the cause of the problem:
1. Power-off the computer and all external devices.
2. Check all cables and power cords.
3. Set all display controls to the middle position.
4. Power-on all external devices.
5. Power-on the computer.
6. Look at the following conditions and follow the instructions:
7. If you cannot continue, replace the last device tested.
The drives in the computer you are servicing might have been
rearranged or the drive startup sequence changed. Be extremely
careful during write operations such as copying, saving, or formatting.
Data or programs can be overwritten if you select an incorrect drive.
• The default is for this computer to boot up in quiet mode (no beep,
no memory count and checkpoint code display) when no errors are
detected by POST.
• Before replacing any FRUs, ensure that the latest level of BIOS is
installed on the system. A down-level BIOS might cause false errors
and unnecessary replacement of the system board.
• Look for displayed error codes
• Look for readable instructions or a main menu on the display.
If you did not receive the correct response, proceed to step 6.
If you do receive the correct response, proceed to step 7.
If the computer displays a POST error, go to "POST error
• If the computer hangs and no error is displayed, continue at step 7.

Chapter 4. General Checkout



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