Well first you need a hell of a lot more information.
What emulator are you running? That's a big one. Can't help you if we don't know what you're using. Second, did you configure controls? You usually need to do that when download an emulator. Finally, how do you know if games run fast if you can't get past the menus?
"NintenDON'T sue me please haha"
The emulator is smooth, all games seem to run normally and fast. I just can't control or do anything so I can never get past the start screen. I've actually pressed every key on my keyboard and nothing registers which is really annoying. How do I fix this?