It looks like you've either got a technomic, in which case everything else on the market will have a shorter quill, or there is something (damage) in the steer tube which is preventing the stem from going all the way down.

Is the stem bottoming out at the bottom of the steer tube? It should be able to get down near the lower headset cup with no problem. If it doesn't, you should probably take the fork out and have someone check it for damage (a shop would probably look at it for free if you just took them the fork. But you'd have to learn how to re-assemble your headset). I've seen steer tubes break before. it's no fun.