Lenovo C315 All-In-One - Manual (Page 17)

Hardware Maintenance Manual
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5. Power-on the computer.
• Look for displayed error codes
• Listen for beep 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 .
6. Look at the following conditions and follow the instructions:
• If you hear beep codes during POST, go to “Beep symptoms” .
• If the computer displays a POST error, go to “POST error codes” .
• If the computer hangs and no error is displayed, continue at step 7 .
7. If you cannot continue, replace the last device tested.
Problem determination tips
Due to the variety of hardware and software combinations that can be
encountered, use the following information to assist you in problem
determination. If possible, have this information available when
requesting assistance from Service Support and Engineering functions.
Machine type and model •
Processor or hard disk upgrades •
Failure symptom •
– Do diagnostics indicate a failure?
– What, when, where, single, or multiple systems?
– Is the failure repeatable?
– Has this configuration ever worked?
– If it has been working, what changes were made prior to it failing?
– Is this the original reported failure?
Diagnostics version •
– Type and version level
Hardware configuration •
– Print (print screen) configuration currently in use
– BIOS level
Operating system software •
– Type and version level
Note: To eliminate confusion, identical systems are considered identical
only if they:
1. Are the exact machine type and models
2. Have the same BIOS level
3. Have the same adapters/attachments in the same locations
4. Have the same address jumpers/terminators/cabling
5. Have the same software versions and levels
6. Have the same configuration options set in the system
7. Have the same setup for the operation system control files