Win 10 k key does not work on several keyboards?

As described above, the k key does not work.

in games sometimes

when logging in (starting from the pc) it's always possible

browser etc. Only sometimes

I have 2 keyboards with both, the keys k on my laptop only go to the pc

Perhaps you have a program open to intercept the key event?
("Involuntarily installed programs." Could also be the cause)

What if the anti virus program can't fix the paint?

Ok did it, found 3 😁