So yeah, this is gonna sound really silly, but I've never had this much difficulty with this before.

On my laptop, the j key (and only that key) is stuck and requires an excessive amount of force to be applied to it for it to work. Normally, I'd assume there's a crumb or something stuck under there, but there's not enough space between the keys for anything large enough to get stuck under there. What should I do to repair it without completely messing up my keyboard?