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Review and perform all steps discussed previously before replacing the system board.
and drivers on page
messages on page
10. Reseat cables and connections on page 106
the effort of replacing unnecessary hardware.
Review
General troubleshooting steps on page 95
IMPORTANT:
tried all other troubleshooting options.
NOTE:
Determine whether a previous service case might be related to the current problem. For
example, a fan detection issue could be caused by a loose connection resulting from previous service.
TIP:
Without an RTC battery (3 V coin-cell battery), the computer automatically reboots. This feature is
useful when the power connector cable (between external AC adapter and system board) is defective.
NOTE:
Most of the time, effective troubleshooting can prevent a system board replacement.
Situations that can prevent resolution of the issue:
●
The information provided about the issue omits key details, including any actions taken before the
issue occurred.
●
BIOS, software, and drivers have not been updated.
●
Cables or connections are loose.
●
Technician is unaware of information available from the HP Support website (CA - Customer
Advisory).
●
The issue is related to existing or known issues that might be identified in existing support articles.
●
Technician might have omitted steps in the provided repair instructions (for example, Spare Part
Replacement Instructions).
●
Skipping one of steps from Troubleshooting Methodology table results in No Defect Found
(NDF)/No Fault Found (NFF)/No Issue Detected (NID) messages.
Verify solution
Confirm that the implemented solution works.
●
Reboot the system or device, and try to complete the task that produced the issue.
●
If a part has been replaced, verify other basic functions. For example, GPU replacement requires
keyboard removal. Therefore, it is good practice to verify all basic components to be sure that the
solution is complete.
●
Explain to the customer why the issue occurred and what was done to resolve it. If the solution you
used was in an HP public document, provide the document information to the customer, letting them
know they can locate it on http://www.hp.com. Also, tell them that there are other solutions available
on the website. Advise the customer to check the website first when they have an issue. It might
save them time calling in.
●
Document the correct issue. Update the case with as many details as possible for other agents and
engineers to analyze and study for lessons learned.
99,
7. Status lights, blinking light codes, troubleshooting lights, and POST error
102,
8. Hard reset on page
System board failure is not common. Do not replace the system board until you have
105, and
9. Soft reset (Default Settings) on page
can resolve many system board issues without requiring
for appropriate troubleshooting steps.
4. Update BIOS
106, or
Verify solution
109
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Table of Contents
Troubleshooting
