ProBook 450 G2: keyboard a few key can not worek

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  Dear community,

  I come here to ask for your advice. Yesterday, I start my HP PROBOOK 450 G2 as usual, but some keys on my keyboard don't work. I have not install or uninstall a program.

  Here the keys that don't work: "F9" "equal" "delete" "page up" "left" "right arrow".

  Ran diags on the boot screen that give me that a failure ID which is GPNE01 - 75 c 871-CD7WMF-G03303.

  That's what I tried to fix it:
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  -malware scan with MALWAREBYTES-> nothing found.

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