step one, don't buy lenovo anything.. nah but fr try take off the spacebar and see if you can fix it underneath. just don't **** up.
Well I suggest pushing it down hardly, because that's what happened with my backspace key, which is still wobbly now. If it doesn't work, some component has to be gone, so you'll have to go fix it. My school fixes it for free, so it might be free for your Lenovo computer repair or just a little money.