How to fix hp pavilion chiclet keyboard, incessantly types by itself a key, only few seconds idle

The key is n

But only in some PC startups, on some startups else it doesn't like typing this now
Rather baffling for sure in any condition this N key itself doesn't function, it won't register plain n into input buffer

These ns typed here is performed by remapped n of another key

 

Try another keyboard and see what happens..

 

Yup
if it's undetermined functional keyboard based on PC startup, some startup time normally work, sometime else not, the keyboard is physically fine
This typing now prove as it's being working normally without the ghost n key stroke

For now have no else extra external keyboard one

Left is where the broken part is that yields failure

 

I have a Dell laptop where several of the keys suddenly stopped working (apparently a hard failure).
I happened to have a spare USB keyboard (which can be purchased quite cheaply) and all its keys worked as soon as it was plugged in.
So I just mounted the keyboard on top of the old keyboard using a couple of strips of Velcro.
I have to carry the keyboard separately when I travel with it of course, but that's not often.

A bonus is that the keyboard has a much nicer tactile key action than the chiclet keys on the laptop, which have essentially none.