CAPSlOCK malfunctioning on hp Laptop

[Aistha]

Hey! i have an issue in my hp device that when ever i press CAPSLOCK on my device keyboard it types "`-BN`-bn" and its so annoying i tried every single thing
updating bios
reverting old bios

updating keyboard drivers 

and i can get rid of this issue. external keyboard works fine but its own keyboard can really write something with caps On. it opens "inspect element" on chrome and do some wierd stuff on chrome.  it opens a new word file on Office when try to type with caps Lock. 

ALso capslight dims out but keep lit even when shutdown, if its done hard shutdown "shift+shutdown" then it went off other wise it keeps lit.
i need assistant with this issue Thanks!

My Device: Hp Elitebook 850 G3

window 10-64 bit

[Prométhée]

hey
from what I understand, you have a problem only if you use the CAPSLOCK key, correct?
You have updated the bios, returned to another version, updated the drivers, without result
The problem may therefore be material, at this stage, you must consult a professional directly
If it is only this key, which is defective, you can without passing , to write in capital letters you can use the Shift key
the cost of a repair could be high