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‎08-17-2022 09:30 AM

HP Recommended
Product: elitebook 8470p
Operating System: Microsoft Windows 10 (64-bit)

Certain keys have stopped working T Y Z X C and a few others. I have run HP diags that confirm. Changed keyoard, still not working? 

Category:
7 REPLIES 7

‎08-17-2022 09:59 AM

HP Recommended

Hello @Simoninberko 

Sorry to hear that you are having problems ... I would like to help you.

Please check keyboard cable, it most cases it has come loose.

 

Download -> HP EliteBook 8470p Maintenance and Service Guide

Page 88 Chapter 4 Removal and replacement procedures

 

ub6424_0-1660751974617.png

 

 

Please report your results

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‎08-17-2022 11:52 AM

HP Recommended

I do not believe that is the problem as I have replaced keyboard and still suffer the same issue but I have checked the cables and both are attached

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‎08-17-2022 12:38 PM - edited ‎08-17-2022 12:38 PM

HP Recommended

Hello @Simoninberko 

 

It could be problem ...

- with <keyboard control board/chip>

- with <motherboard>

- with <keyboard socket> (pins defective or dirst/dust)

 

I can't say for sure from a distance...

 

Does an externally connected USB keyboard work 100%?

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‎08-17-2022 12:56 PM

HP Recommended

Ok, but I ran component tests on system board and chip would the tests not have picked faults with them up?

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‎08-17-2022 01:00 PM

HP Recommended

I'm asking again:

Does an externally connected USB keyboard work 100%?

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‎08-18-2022 12:28 AM

HP Recommended

Yes, external USB keyboard works fine

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‎08-18-2022 01:25 AM

HP Recommended
@Simoninberko wrote:

Ok, but I ran component tests on system board and chip would the tests not have picked faults with them up?

Components tests can not find all errors !

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