Friend needs help with...

[skav2]

Ok my friend plays this game called maple story (kinda childish) he has a problem when he is about to play it says "Input Not Supported" and since my friends think of me as The Computer Dalai Llama he asked me to help him. He is running windows vista home premium and has a compaq presario ( Don't remember all the details) you get my drift anyway i thought it was a codec error or a codec was missing so i reinstalled windows codecs and installed directx 9 and 10 to see if it would solve the error and i deleted the game and reintalled it and it still wont work. can anyone help?