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HP ZBook 15 - 8 Adjacent Keys Stopped Working. Replaced keyboard - No Change

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3 replies to this topic

#1 kmo1117


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Posted 10 February 2017 - 03:40 PM

Hi All,


One of my users (I'm the Deskside Support Tech at a big company) has an HP ZBook 15 Mobile Workstation running Windows 64-bit Enterprise.  He reported that the number keys 6 & 7 located along the top row under the Function keys along with the letter keys Y, U, H, J and N, M all have stopped working.
So first I tried re-seating the ribbon cables.  Completely stopped working - couldn't even log on with CTRL+ALT+DEL.  I ordered a new keyboard from HP and replaced the keyboard and the issue still exists.  I checked it in Pre-Windows Environment - still same.
Am I going to have to replace the entire system board for this? Or has anyone had any success flashing the BIOS or other solution?

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#2 toofarnorth


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Posted 10 February 2017 - 05:26 PM

Hello kmo

Sorry I can't be of much help with this.

Have you checked if it still is under warranty from HP?

If so you could call them. Usually on highend laptops they have a 3y NBD onsite warranty.
Then you would help them diagnose and their technician would show up with the parts needed to be swapped




#3 JohnC_21


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Posted 10 February 2017 - 05:58 PM

Does tapping the Esc key at boot give you anything? 

#4 bludgard


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Posted 10 February 2017 - 08:26 PM

Check that ribbon connector from KB to MB hasn't any corrosion and non-existent contact(s)... scraped of or otherwise.

Check the connector pins on MB where ribbon connects.

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