Laptop crashed when e is pressed?

I just got there to copy pastes

So, my laptop keeps crashing when I press e, no message, it just goes black

It's not always when I press the button, but quite often, even if I press it as gently as possible

Mainboard was replaced a while ago but it still happens

What could be the mistake? How could I fix it?

I would say that there's somehow a short circuit that crashes the PC. Probably only swapping the keyboard helps…